72456620755 has 16 divisors (see below), whose sum is σ = 88404904224. Its totient is φ = 56994670080.

The previous prime is 72456620749. The next prime is 72456620779. The reversal of 72456620755 is 55702665427.

It is not a de Polignac number, because 72456620755 - 2⁵ = 72456620723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72456620699 and 72456620708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 842584 + ... + 924586.

It is an arithmetic number, because the mean of its divisors is an integer number (5525306514).

Almost surely, 2^72456620755 is an apocalyptic number.

72456620755 is a deficient number, since it is larger than the sum of its proper divisors (15948283469).

72456620755 is a wasteful number, since it uses less digits than its factorization.

72456620755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84966.

The product of its (nonzero) digits is 3528000, while the sum is 49.

The spelling of 72456620755 in words is "seventy-two billion, four hundred fifty-six million, six hundred twenty thousand, seven hundred fifty-five".