21964706510 has 16 divisors (see below), whose sum is σ = 39550458816. Its totient is φ = 8782774368.

The previous prime is 21964706483. The next prime is 21964706549. The reversal of 21964706510 is 1560746912.

It is a congruent number.

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, 358742 + ... + 415481.

It is an arithmetic number, because the mean of its divisors is an integer number (2471903676).

Almost surely, 2^21964706510 is an apocalyptic number.

21964706510 is a deficient number, since it is larger than the sum of its proper divisors (17585752306).

21964706510 is a wasteful number, since it uses less digits than its factorization.

21964706510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777067.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 21964706510 in words is "twenty-one billion, nine hundred sixty-four million, seven hundred six thousand, five hundred ten".