402535211172 has 24 divisors (see below), whose sum is σ = 969547176192. Its totient is φ = 129850068000.

The previous prime is 402535211171. The next prime is 402535211219. The reversal of 402535211172 is 271112535204.

It is a happy number.

It is a super-2 number, since 2×402535211172² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402535211171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541041579 + ... + 541042322.

It is an arithmetic number, because the mean of its divisors is an integer number (40397799008).

Almost surely, 2^402535211172 is an apocalyptic number.

It is an amenable number.

402535211172 is an abundant number, since it is smaller than the sum of its proper divisors (567011965020).

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

402535211172 is a wasteful number, since it uses less digits than its factorization.

402535211172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082083939 (or 1082083937 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

Adding to 402535211172 its reverse (271112535204), we get a palindrome (673647746376).

The spelling of 402535211172 in words is "four hundred two billion, five hundred thirty-five million, two hundred eleven thousand, one hundred seventy-two".