64155504235239 has 12 divisors (see below), whose sum is σ = 92669466595576. Its totient is φ = 42770149269552.

The previous prime is 64155504235157. The next prime is 64155504235261. The reversal of 64155504235239 is 93253240555146.

64155504235239 is a `hidden beast` number, since 6 + 4 + 1 + 5 + 550 + 4 + 2 + 3 + 52 + 39 = 666.

It is not a de Polignac number, because 64155504235239 - 2¹³ = 64155504227047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64155504235279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13383592 + ... + 17533725.

Almost surely, 2^{64155504235239} is an apocalyptic number.

64155504235239 is a deficient number, since it is larger than the sum of its proper divisors (28513962360337).

64155504235239 is a wasteful number, since it uses less digits than its factorization.

64155504235239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31147886 (or 31147883 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 54.

The spelling of 64155504235239 in words is "sixty-four trillion, one hundred fifty-five billion, five hundred four million, two hundred thirty-five thousand, two hundred thirty-nine".