551023365402 has 48 divisors (see below), whose sum is σ = 1258811473920. Its totient is φ = 173717784000.

The previous prime is 551023365371. The next prime is 551023365443. The reversal of 551023365402 is 204563320155.

551023365402 is a `hidden beast` number, since 5 + 5 + 10 + 233 + 6 + 5 + 402 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1134874 + ... + 1545957.

It is an arithmetic number, because the mean of its divisors is an integer number (26225239040).

Almost surely, 2^551023365402 is an apocalyptic number.

551023365402 is an abundant number, since it is smaller than the sum of its proper divisors (707788108518).

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

551023365402 is a wasteful number, since it uses less digits than its factorization.

551023365402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681459 (or 2681456 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 551023365402 its reverse (204563320155), we get a palindrome (755586685557).

The spelling of 551023365402 in words is "five hundred fifty-one billion, twenty-three million, three hundred sixty-five thousand, four hundred two".