72391474473 has 8 divisors (see below), whose sum is σ = 96897538848. Its totient is φ = 48073196544.

The previous prime is 72391474471. The next prime is 72391474511. The reversal of 72391474473 is 37447419327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72391474473 - 2¹ = 72391474471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72391474471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46945711 + ... + 46947252.

It is an arithmetic number, because the mean of its divisors is an integer number (12112192356).

Almost surely, 2^72391474473 is an apocalyptic number.

It is an amenable number.

72391474473 is a deficient number, since it is larger than the sum of its proper divisors (24506064375).

72391474473 is a wasteful number, since it uses less digits than its factorization.

72391474473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93893223.

The product of its digits is 3556224, while the sum is 51.

The spelling of 72391474473 in words is "seventy-two billion, three hundred ninety-one million, four hundred seventy-four thousand, four hundred seventy-three".