21607148466 has 32 divisors (see below), whose sum is σ = 48023395200. Its totient is φ = 7201256400.

The previous prime is 21607148447. The next prime is 21607148471. The reversal of 21607148466 is 66484170612.

21607148466 is a `hidden beast` number, since 2 + 160 + 7 + 1 + 484 + 6 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362691 + ... + 418041.

It is an arithmetic number, because the mean of its divisors is an integer number (1500731100).

Almost surely, 2^21607148466 is an apocalyptic number.

21607148466 is an abundant number, since it is smaller than the sum of its proper divisors (26416246734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21607148466 is a wasteful number, since it uses less digits than its factorization.

21607148466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62591 (or 62585 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 21607148466 in words is "twenty-one billion, six hundred seven million, one hundred forty-eight thousand, four hundred sixty-six".