402531178848 has 24 divisors (see below), whose sum is σ = 1056644344728. Its totient is φ = 134177059584.

The previous prime is 402531178843. The next prime is 402531178867. The reversal of 402531178848 is 848871135204.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 402531178848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402531178843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096516461 + ... + 2096516652.

It is an arithmetic number, because the mean of its divisors is an integer number (44026847697).

Almost surely, 2^402531178848 is an apocalyptic number.

402531178848 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

402531178848 is an abundant number, since it is smaller than the sum of its proper divisors (654113165880).

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

402531178848 is a wasteful number, since it uses less digits than its factorization.

402531178848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193033126 (or 4193033118 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 402531178848 in words is "four hundred two billion, five hundred thirty-one million, one hundred seventy-eight thousand, eight hundred forty-eight".