72537847877572 has 96 divisors (see below), whose sum is σ = 162394277472000. Its totient is φ = 27526314240000.

The previous prime is 72537847877569. The next prime is 72537847877609. The reversal of 72537847877572 is 27577874873527.

It is a junction number, because it is equal to n+sod(n) for n = 72537847877492 and 72537847877501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2810554 + ... + 12368302.

It is an arithmetic number, because the mean of its divisors is an integer number (1691607057000).

Almost surely, 2^{72537847877572} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72537847877572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81197138736000).

72537847877572 is an abundant number, since it is smaller than the sum of its proper divisors (89856429594428).

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

72537847877572 is a wasteful number, since it uses less digits than its factorization.

72537847877572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9558413 (or 9558411 counting only the distinct ones).

The product of its digits is 9035443200, while the sum is 79.

The spelling of 72537847877572 in words is "seventy-two trillion, five hundred thirty-seven billion, eight hundred forty-seven million, eight hundred seventy-seven thousand, five hundred seventy-two".