64727831513275 has 24 divisors (see below), whose sum is σ = 91728944916224. Its totient is φ = 44384624157600.

The previous prime is 64727831513249. The next prime is 64727831513297. The reversal of 64727831513275 is 57231513872746.

It is not a de Polignac number, because 64727831513275 - 2³³ = 64719241578683 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56887594 + ... + 58014256.

Almost surely, 2^{64727831513275} is an apocalyptic number.

64727831513275 is a deficient number, since it is larger than the sum of its proper divisors (27001113402949).

64727831513275 is a wasteful number, since it uses less digits than its factorization.

64727831513275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454971 (or 1454966 counting only the distinct ones).

The product of its digits is 59270400, while the sum is 61.

The spelling of 64727831513275 in words is "sixty-four trillion, seven hundred twenty-seven billion, eight hundred thirty-one million, five hundred thirteen thousand, two hundred seventy-five".