402521132165240 has 64 divisors (see below), whose sum is σ = 988123611755520. Its totient is φ = 146353958352000.

The previous prime is 402521132165213. The next prime is 402521132165291. The reversal of 402521132165240 is 42561231125204.

It is a junction number, because it is equal to n+sod(n) for n = 402521132165194 and 402521132165203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50543756 + ... + 57963035.

It is an arithmetic number, because the mean of its divisors is an integer number (15439431433680).

Almost surely, 2^{402521132165240} is an apocalyptic number.

402521132165240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402521132165240 is an abundant number, since it is smaller than the sum of its proper divisors (585602479590280).

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

402521132165240 is a wasteful number, since it uses less digits than its factorization.

402521132165240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108515244 (or 108515240 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 402521132165240 in words is "four hundred two trillion, five hundred twenty-one billion, one hundred thirty-two million, one hundred sixty-five thousand, two hundred forty".