64077944658 has 32 divisors (see below), whose sum is σ = 157730326656. Its totient is φ = 16899677568.

The previous prime is 64077944647. The next prime is 64077944669. The reversal of 64077944658 is 85644977046.

It is an interprime number because it is at equal distance from previous prime (64077944647) and next prime (64077944669).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58678891 + ... + 58679982.

It is an arithmetic number, because the mean of its divisors is an integer number (4929072708).

Almost surely, 2^64077944658 is an apocalyptic number.

64077944658 is an abundant number, since it is smaller than the sum of its proper divisors (93652381998).

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

64077944658 is a wasteful number, since it uses less digits than its factorization.

64077944658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117358898.

The product of its (nonzero) digits is 40642560, while the sum is 60.

The spelling of 64077944658 in words is "sixty-four billion, seventy-seven million, nine hundred forty-four thousand, six hundred fifty-eight".