21610266434 has 16 divisors (see below), whose sum is σ = 32835347136. Its totient is φ = 10665798000.

The previous prime is 21610266409. The next prime is 21610266463. The reversal of 21610266434 is 43466201612.

It is a junction number, because it is equal to n+sod(n) for n = 21610266394 and 21610266403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94742 + ... + 228465.

It is an arithmetic number, because the mean of its divisors is an integer number (2052209196).

Almost surely, 2^21610266434 is an apocalyptic number.

21610266434 is a deficient number, since it is larger than the sum of its proper divisors (11225080702).

21610266434 is a wasteful number, since it uses less digits than its factorization.

21610266434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323641.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 21610266434 in words is "twenty-one billion, six hundred ten million, two hundred sixty-six thousand, four hundred thirty-four".