818251652472 has 32 divisors (see below), whose sum is σ = 2084225910480. Its totient is φ = 267604313600.

The previous prime is 818251652443. The next prime is 818251652473. The reversal of 818251652472 is 274256152818.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818251652473) 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, 321638529 + ... + 321641072.

Almost surely, 2^818251652472 is an apocalyptic number.

It is an amenable number.

818251652472 is an abundant number, since it is smaller than the sum of its proper divisors (1265974258008).

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

818251652472 is a wasteful number, since it uses less digits than its factorization.

818251652472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643279663 (or 643279659 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 51.

The spelling of 818251652472 in words is "eight hundred eighteen billion, two hundred fifty-one million, six hundred fifty-two thousand, four hundred seventy-two".