21676650507 has 6 divisors (see below), whose sum is σ = 31310717412. Its totient is φ = 14451100332.

The previous prime is 21676650487. The next prime is 21676650509. The reversal of 21676650507 is 70505667612.

21676650507 is a `hidden beast` number, since 2 + 16 + 76 + 65 + 0 + 507 = 666.

It is not a de Polignac number, because 21676650507 - 2¹⁴ = 21676634123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21676650509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1204258353 + ... + 1204258370.

It is an arithmetic number, because the mean of its divisors is an integer number (5218452902).

Almost surely, 2^21676650507 is an apocalyptic number.

21676650507 is a deficient number, since it is larger than the sum of its proper divisors (9634066905).

21676650507 is a wasteful number, since it uses less digits than its factorization.

21676650507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408516729 (or 2408516726 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 21676650507 in words is "twenty-one billion, six hundred seventy-six million, six hundred fifty thousand, five hundred seven".