402555757660 has 192 divisors, whose sum is σ = 1023176448000. Its totient is φ = 129961608192.

The previous prime is 402555757649. The next prime is 402555757729. The reversal of 402555757660 is 66757555204.

It is a super-2 number, since 2×402555757660² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402555757598 and 402555757607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 505088382 + ... + 505089178.

It is an arithmetic number, because the mean of its divisors is an integer number (5329044000).

Almost surely, 2^402555757660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402555757660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511588224000).

402555757660 is an abundant number, since it is smaller than the sum of its proper divisors (620620690340).

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

402555757660 is a wasteful number, since it uses less digits than its factorization.

402555757660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 8820000, while the sum is 52.

The spelling of 402555757660 in words is "four hundred two billion, five hundred fifty-five million, seven hundred fifty-seven thousand, six hundred sixty".