64866697264 has 10 divisors (see below), whose sum is σ = 125679225980. Its totient is φ = 32433348624.

The previous prime is 64866697253. The next prime is 64866697271. The reversal of 64866697264 is 46279666846.

It is a junction number, because it is equal to n+sod(n) for n = 64866697196 and 64866697205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027084274 + ... + 2027084305.

It is an arithmetic number, because the mean of its divisors is an integer number (12567922598).

Almost surely, 2^64866697264 is an apocalyptic number.

It is an amenable number.

64866697264 is a deficient number, since it is larger than the sum of its proper divisors (60812528716).

64866697264 is a wasteful number, since it uses less digits than its factorization.

64866697264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054168587 (or 4054168581 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 64.

The spelling of 64866697264 in words is "sixty-four billion, eight hundred sixty-six million, six hundred ninety-seven thousand, two hundred sixty-four".