72350619655 has 4 divisors (see below), whose sum is σ = 86820743592. Its totient is φ = 57880495720.

The previous prime is 72350619641. The next prime is 72350619683. The reversal of 72350619655 is 55691605327.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55691605327 = 33023 ⋅1686449.

It is not a de Polignac number, because 72350619655 - 2²³ = 72342231047 is a prime.

It is a super-2 number, since 2×72350619655² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72350619599 and 72350619608.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 7235061961 + ... + 7235061970.

It is an arithmetic number, because the mean of its divisors is an integer number (21705185898).

Almost surely, 2^72350619655 is an apocalyptic number.

72350619655 is a deficient number, since it is larger than the sum of its proper divisors (14470123937).

72350619655 is a wasteful number, since it uses less digits than its factorization.

72350619655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14470123936.

The product of its (nonzero) digits is 1701000, while the sum is 49.

The spelling of 72350619655 in words is "seventy-two billion, three hundred fifty million, six hundred nineteen thousand, six hundred fifty-five".