523099905722 has 4 divisors (see below), whose sum is σ = 784649858586. Its totient is φ = 261549952860.

The previous prime is 523099905697. The next prime is 523099905773. The reversal of 523099905722 is 227509990325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 510294493801 + 12805411921 = 714349^2 + 113161^2 .

It is a super-2 number, since 2×523099905722² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130774976429 + ... + 130774976432.

Almost surely, 2^523099905722 is an apocalyptic number.

523099905722 is a deficient number, since it is larger than the sum of its proper divisors (261549952864).

523099905722 is a wasteful number, since it uses less digits than its factorization.

523099905722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261549952863.

The product of its (nonzero) digits is 3061800, while the sum is 53.

The spelling of 523099905722 in words is "five hundred twenty-three billion, ninety-nine million, nine hundred five thousand, seven hundred twenty-two".