72513543776 has 48 divisors (see below), whose sum is σ = 150480716400. Its totient is φ = 34301449728.

The previous prime is 72513543743. The next prime is 72513543827. The reversal of 72513543776 is 67734531527.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364310 + ... + 527018.

It is an arithmetic number, because the mean of its divisors is an integer number (3135014925).

Almost surely, 2^72513543776 is an apocalyptic number.

72513543776 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72513543776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75240358200).

72513543776 is an abundant number, since it is smaller than the sum of its proper divisors (77967172624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72513543776 is a wasteful number, since it uses less digits than its factorization.

72513543776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163471 (or 163463 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 50.

The spelling of 72513543776 in words is "seventy-two billion, five hundred thirteen million, five hundred forty-three thousand, seven hundred seventy-six".