1401768529920 has 520 divisors, whose sum is σ = 5481874585440. Its totient is φ = 339818250240.

The previous prime is 1401768529879. The next prime is 1401768529939. The reversal of 1401768529920 is 299258671041.

It is a happy number.

1401768529920 is a `hidden beast` number, since 1 + 40 + 1 + 76 + 8 + 529 + 9 + 2 + 0 = 666.

It is a super-2 number, since 2×1401768529920² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 39 ways as a sum of consecutive naturals, for example, 18209271 + ... + 18286089.

Almost surely, 2^{1401768529920} is an apocalyptic number.

1401768529920 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 1401768529920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2740937292720).

1401768529920 is an abundant number, since it is smaller than the sum of its proper divisors (4080106055520).

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

1401768529920 is an equidigital number, since it uses as much as digits as its factorization.

1401768529920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76871 (or 76840 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 1401768529920 in words is "one trillion, four hundred one billion, seven hundred sixty-eight million, five hundred twenty-nine thousand, nine hundred twenty".