16261226624 has 16 divisors (see below), whose sum is σ = 32395412670. Its totient is φ = 8130613248.

The previous prime is 16261226609. The next prime is 16261226633. The reversal of 16261226624 is 42662216261.

It can be written as a sum of positive squares in only one way, i.e., 12877710400 + 3383516224 = 113480^2 + 58168^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63520289 + ... + 63520544.

Almost surely, 2^16261226624 is an apocalyptic number.

It is an amenable number.

16261226624 is a deficient number, since it is larger than the sum of its proper divisors (16134186046).

16261226624 is an equidigital number, since it uses as much as digits as its factorization.

16261226624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127040847 (or 127040835 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The spelling of 16261226624 in words is "sixteen billion, two hundred sixty-one million, two hundred twenty-six thousand, six hundred twenty-four".