72655206725563 has 64 divisors (see below), whose sum is σ = 97069543105536. Its totient is φ = 52644533760000.

The previous prime is 72655206725501. The next prime is 72655206725573. The reversal of 72655206725563 is 36552760255627.

It is not a de Polignac number, because 72655206725563 - 2²¹ = 72655204628411 is a prime.

It is a super-3 number, since 3×72655206725563³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72655206725573) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36879213 + ... + 38799313.

It is an arithmetic number, because the mean of its divisors is an integer number (1516711611024).

Almost surely, 2^{72655206725563} is an apocalyptic number.

72655206725563 is a deficient number, since it is larger than the sum of its proper divisors (24414336379973).

72655206725563 is a wasteful number, since it uses less digits than its factorization.

72655206725563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920484.

The product of its (nonzero) digits is 158760000, while the sum is 61.

The spelling of 72655206725563 in words is "seventy-two trillion, six hundred fifty-five billion, two hundred six million, seven hundred twenty-five thousand, five hundred sixty-three".