72513551803 has 16 divisors (see below), whose sum is σ = 90415814400. Its totient is φ = 56498248800.

The previous prime is 72513551797. The next prime is 72513551843. The reversal of 72513551803 is 30815531527.

It is not a de Polignac number, because 72513551803 - 2²⁹ = 71976680891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72513551843) 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, 800068 + ... + 886078.

It is an arithmetic number, because the mean of its divisors is an integer number (5650988400).

Almost surely, 2^72513551803 is an apocalyptic number.

72513551803 is a deficient number, since it is larger than the sum of its proper divisors (17902262597).

72513551803 is a wasteful number, since it uses less digits than its factorization.

72513551803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96978.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 72513551803 in words is "seventy-two billion, five hundred thirteen million, five hundred fifty-one thousand, eight hundred three".