72644117623065 has 144 divisors (see below), whose sum is σ = 135226616773248. Its totient is φ = 36005634458112.

The previous prime is 72644117623009. The next prime is 72644117623087. The reversal of 72644117623065 is 56032671144627.

72644117623065 is a `hidden beast` number, since 7 + 2 + 6 + 4 + 4 + 1 + 1 + 7 + 623 + 0 + 6 + 5 = 666.

It is not a de Polignac number, because 72644117623065 - 2¹⁷ = 72644117491993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 313109194 + ... + 313341116.

It is an arithmetic number, because the mean of its divisors is an integer number (939073727592).

Almost surely, 2^{72644117623065} is an apocalyptic number.

It is an amenable number.

72644117623065 is a deficient number, since it is larger than the sum of its proper divisors (62582499150183).

72644117623065 is a wasteful number, since it uses less digits than its factorization.

72644117623065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232188 (or 232138 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 72644117623065 in words is "seventy-two trillion, six hundred forty-four billion, one hundred seventeen million, six hundred twenty-three thousand, sixty-five".