72919557363 has 4 divisors (see below), whose sum is σ = 97226076488. Its totient is φ = 48613038240.

The previous prime is 72919557329. The next prime is 72919557367. The reversal of 72919557363 is 36375591927.

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

It is not a de Polignac number, because 72919557363 - 2²⁰ = 72918508787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72919557367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12153259558 + ... + 12153259563.

It is an arithmetic number, because the mean of its divisors is an integer number (24306519122).

Almost surely, 2^72919557363 is an apocalyptic number.

72919557363 is a deficient number, since it is larger than the sum of its proper divisors (24306519125).

72919557363 is a wasteful number, since it uses less digits than its factorization.

72919557363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24306519124.

The product of its digits is 10716300, while the sum is 57.

The spelling of 72919557363 in words is "seventy-two billion, nine hundred nineteen million, five hundred fifty-seven thousand, three hundred sixty-three".