64906446654 has 48 divisors (see below), whose sum is σ = 161301031008. Its totient is φ = 18477740736.

The previous prime is 64906446653. The next prime is 64906446679. The reversal of 64906446654 is 45664460946.

64906446654 is a `hidden beast` number, since 6 + 490 + 6 + 44 + 66 + 54 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 64906446654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64906446653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 894937 + ... + 964740.

It is an arithmetic number, because the mean of its divisors is an integer number (3360438146).

Almost surely, 2^64906446654 is an apocalyptic number.

64906446654 is an abundant number, since it is smaller than the sum of its proper divisors (96394584354).

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

64906446654 is a wasteful number, since it uses less digits than its factorization.

64906446654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859969 (or 1859966 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 54.

The spelling of 64906446654 in words is "sixty-four billion, nine hundred six million, four hundred forty-six thousand, six hundred fifty-four".