72959477155 has 4 divisors (see below), whose sum is σ = 87551372592. Its totient is φ = 58367581720.

The previous prime is 72959477141. The next prime is 72959477179. The reversal of 72959477155 is 55177495927.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 72959477155 - 2²³ = 72951088547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72959477093 and 72959477102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7295947711 + ... + 7295947720.

It is an arithmetic number, because the mean of its divisors is an integer number (21887843148).

Almost surely, 2^72959477155 is an apocalyptic number.

72959477155 is a deficient number, since it is larger than the sum of its proper divisors (14591895437).

72959477155 is a wasteful number, since it uses less digits than its factorization.

72959477155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14591895436.

The product of its digits is 27783000, while the sum is 61.

The spelling of 72959477155 in words is "seventy-two billion, nine hundred fifty-nine million, four hundred seventy-seven thousand, one hundred fifty-five".