72347538526 has 4 divisors (see below), whose sum is σ = 108521307792. Its totient is φ = 36173769262.

The previous prime is 72347538521. The next prime is 72347538581. The reversal of 72347538526 is 62583574327.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×72347538526³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72347538521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18086884630 + ... + 18086884633.

It is an arithmetic number, because the mean of its divisors is an integer number (27130326948).

Almost surely, 2^72347538526 is an apocalyptic number.

72347538526 is a deficient number, since it is larger than the sum of its proper divisors (36173769266).

72347538526 is a wasteful number, since it uses less digits than its factorization.

72347538526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36173769265.

The product of its digits is 8467200, while the sum is 52.

The spelling of 72347538526 in words is "seventy-two billion, three hundred forty-seven million, five hundred thirty-eight thousand, five hundred twenty-six".