401757522672 has 80 divisors (see below), whose sum is σ = 1132552012032. Its totient is φ = 121709621760.

The previous prime is 401757522589. The next prime is 401757522679. The reversal of 401757522672 is 276225757104.

It is a happy number.

It is a super-2 number, since 2×401757522672² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401757522679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1754388 + ... + 1970124.

Almost surely, 2^401757522672 is an apocalyptic number.

It is an amenable number.

401757522672 is an abundant number, since it is smaller than the sum of its proper divisors (730794489360).

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

401757522672 is a wasteful number, since it uses less digits than its factorization.

401757522672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219286 (or 219280 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 48.

It can be divided in two parts, 401757 and 522672, that added together give a palindrome (924429).

The spelling of 401757522672 in words is "four hundred one billion, seven hundred fifty-seven million, five hundred twenty-two thousand, six hundred seventy-two".