521002152140540 has 96 divisors (see below), whose sum is σ = 1275943124400000. Its totient is φ = 178626581199360.

The previous prime is 521002152140501. The next prime is 521002152140573. The reversal of 521002152140540 is 45041251200125.

It is a super-2 number, since 2×521002152140540² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 521002152140497 and 521002152140506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 477329336 + ... + 478419584.

It is an arithmetic number, because the mean of its divisors is an integer number (13291074212500).

Almost surely, 2^{521002152140540} is an apocalyptic number.

It is an amenable number.

521002152140540 is an abundant number, since it is smaller than the sum of its proper divisors (754940972259460).

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

521002152140540 is a wasteful number, since it uses less digits than its factorization.

521002152140540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159940 (or 1159924 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

The spelling of 521002152140540 in words is "five hundred twenty-one trillion, two billion, one hundred fifty-two million, one hundred forty thousand, five hundred forty".