72744201537 has 64 divisors (see below), whose sum is σ = 114605568000. Its totient is φ = 40175357184.

The previous prime is 72744201527. The next prime is 72744201581. The reversal of 72744201537 is 73510244727.

It is not a de Polignac number, because 72744201537 - 2⁸ = 72744201281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72744201527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 144620428 + ... + 144620930.

It is an arithmetic number, because the mean of its divisors is an integer number (1790712000).

Almost surely, 2^72744201537 is an apocalyptic number.

It is an amenable number.

72744201537 is a deficient number, since it is larger than the sum of its proper divisors (41861366463).

72744201537 is a wasteful number, since it uses less digits than its factorization.

72744201537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422.

The product of its (nonzero) digits is 329280, while the sum is 42.

The spelling of 72744201537 in words is "seventy-two billion, seven hundred forty-four million, two hundred one thousand, five hundred thirty-seven".