1501999994880 has 1152 divisors, whose sum is σ = 6776130816000. Its totient is φ = 312072929280.

The previous prime is 1501999994863. The next prime is 1501999994899. The reversal of 1501999994880 is 884999991051.

1501999994880 is a `hidden beast` number, since 1 + 50 + 1 + 9 + 9 + 9 + 99 + 488 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a super-3 number, since 3×1501999994880³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 1501999994799 and 1501999994808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 149017681 + ... + 149027759.

It is an arithmetic number, because the mean of its divisors is an integer number (5882058000).

Almost surely, 2^{1501999994880} is an apocalyptic number.

1501999994880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1501999994880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3388065408000).

1501999994880 is an abundant number, since it is smaller than the sum of its proper divisors (5274130821120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1501999994880 is a wasteful number, since it uses less digits than its factorization.

1501999994880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140 (or 10107 counting only the distinct ones).

The product of its (nonzero) digits is 75582720, while the sum is 72.

The spelling of 1501999994880 in words is "one trillion, five hundred one billion, nine hundred ninety-nine million, nine hundred ninety-four thousand, eight hundred eighty".