64546966964548 has 12 divisors (see below), whose sum is σ = 115712245656252. Its totient is φ = 31486325348480.

The previous prime is 64546966964497. The next prime is 64546966964561. The reversal of 64546966964548 is 84546966964546.

It can be written as a sum of positive squares in 2 ways, for example, as 38500560633924 + 26046406330624 = 6204882^2 + 5103568^2 .

It is a Harshad number since it is a multiple of its sum of digits (82).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196789533265 + ... + 196789533592.

It is an arithmetic number, because the mean of its divisors is an integer number (9642687138021).

Almost surely, 2^{64546966964548} is an apocalyptic number.

It is an amenable number.

64546966964548 is a deficient number, since it is larger than the sum of its proper divisors (51165278691704).

64546966964548 is a wasteful number, since it uses less digits than its factorization.

64546966964548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393579066902 (or 393579066900 counting only the distinct ones).

The product of its digits is 32248627200, while the sum is 82.

The spelling of 64546966964548 in words is "sixty-four trillion, five hundred forty-six billion, nine hundred sixty-six million, nine hundred sixty-four thousand, five hundred forty-eight".