1081501895520 has 1152 divisors, whose sum is σ = 4264298680320. Its totient is φ = 254843781120.

The previous prime is 1081501895501. The next prime is 1081501895567. The reversal of 1081501895520 is 255981051801.

It is a happy number.

1081501895520 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 501 + 8 + 95 + 52 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3116719987 + ... + 3116720333.

It is an arithmetic number, because the mean of its divisors is an integer number (3701648160).

Almost surely, 2^{1081501895520} is an apocalyptic number.

1081501895520 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 1081501895520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2132149340160).

1081501895520 is an abundant number, since it is smaller than the sum of its proper divisors (3182796784800).

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

1081501895520 is a wasteful number, since it uses less digits than its factorization.

1081501895520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 45.

The spelling of 1081501895520 in words is "one trillion, eighty-one billion, five hundred one million, eight hundred ninety-five thousand, five hundred twenty".