72132151321 has 16 divisors (see below), whose sum is σ = 74716876800. Its totient is φ = 69563869200.

The previous prime is 72132151309. The next prime is 72132151349. The reversal of 72132151321 is 12315123127.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72132151321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72132151321.

It is not an unprimeable number, because it can be changed into a prime (72132151391) 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, 23954706 + ... + 23957716.

It is an arithmetic number, because the mean of its divisors is an integer number (4669804800).

Almost surely, 2^72132151321 is an apocalyptic number.

It is an amenable number.

72132151321 is a deficient number, since it is larger than the sum of its proper divisors (2584725479).

72132151321 is a wasteful number, since it uses less digits than its factorization.

72132151321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460.

The product of its digits is 2520, while the sum is 28.

Adding to 72132151321 its reverse (12315123127), we get a palindrome (84447274448).

The spelling of 72132151321 in words is "seventy-two billion, one hundred thirty-two million, one hundred fifty-one thousand, three hundred twenty-one".