72171789483 has 16 divisors (see below), whose sum is σ = 98328867840. Its totient is φ = 47065710336.

The previous prime is 72171789479. The next prime is 72171789497. The reversal of 72171789483 is 38498717127.

It is not a de Polignac number, because 72171789483 - 2² = 72171789479 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72171789413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130866 + ... + 401832.

It is an arithmetic number, because the mean of its divisors is an integer number (6145554240).

Almost surely, 2^72171789483 is an apocalyptic number.

72171789483 is a deficient number, since it is larger than the sum of its proper divisors (26157078357).

72171789483 is a wasteful number, since it uses less digits than its factorization.

72171789483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272906.

The product of its digits is 4741632, while the sum is 57.

The spelling of 72171789483 in words is "seventy-two billion, one hundred seventy-one million, seven hundred eighty-nine thousand, four hundred eighty-three".