72615562067 has 4 divisors (see below), whose sum is σ = 76887065736. Its totient is φ = 68344058400.

The previous prime is 72615562051. The next prime is 72615562079. The reversal of 72615562067 is 76026551627.

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

It is a cyclic number.

It is not a de Polignac number, because 72615562067 - 2⁴ = 72615562051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72615562567) by changing a digit.

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, 2135751809 + ... + 2135751842.

It is an arithmetic number, because the mean of its divisors is an integer number (19221766434).

Almost surely, 2^72615562067 is an apocalyptic number.

72615562067 is a deficient number, since it is larger than the sum of its proper divisors (4271503669).

72615562067 is a wasteful number, since it uses less digits than its factorization.

72615562067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271503668.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 72615562067 in words is "seventy-two billion, six hundred fifteen million, five hundred sixty-two thousand, sixty-seven".