64504764555715 has 8 divisors (see below), whose sum is σ = 84442600873008. Its totient is φ = 46912556040480.

The previous prime is 64504764555641. The next prime is 64504764555733. The reversal of 64504764555715 is 51755546740546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64504764555715 - 2¹⁹ = 64504764031427 is a prime.

It is a super-2 number, since 2×64504764555715² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586406950452 + ... + 586406950561.

It is an arithmetic number, because the mean of its divisors is an integer number (10555325109126).

Almost surely, 2^{64504764555715} is an apocalyptic number.

64504764555715 is a deficient number, since it is larger than the sum of its proper divisors (19937836317293).

64504764555715 is a wasteful number, since it uses less digits than its factorization.

64504764555715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172813901029.

The product of its (nonzero) digits is 352800000, while the sum is 64.

The spelling of 64504764555715 in words is "sixty-four trillion, five hundred four billion, seven hundred sixty-four million, five hundred fifty-five thousand, seven hundred fifteen".