72534821288 has 32 divisors (see below), whose sum is σ = 137598912000. Its totient is φ = 35842181760.

The previous prime is 72534821239. The next prime is 72534821299. The reversal of 72534821288 is 88212843527.

It is a super-2 number, since 2×72534821288² (a number of 23 digits) contains 22 as substring.

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, 1478903 + ... + 1527161.

It is an arithmetic number, because the mean of its divisors is an integer number (4299966000).

Almost surely, 2^72534821288 is an apocalyptic number.

It is an amenable number.

72534821288 is a deficient number, since it is larger than the sum of its proper divisors (65064090712).

72534821288 is a wasteful number, since it uses less digits than its factorization.

72534821288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50465 (or 50461 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 50.

The spelling of 72534821288 in words is "seventy-two billion, five hundred thirty-four million, eight hundred twenty-one thousand, two hundred eighty-eight".