72532449690 has 16 divisors (see below), whose sum is σ = 174077879328. Its totient is φ = 19341986576.

The previous prime is 72532449629. The next prime is 72532449697. The reversal of 72532449690 is 9694423527.

It is a super-2 number, since 2×72532449690² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (72532449697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1208874132 + ... + 1208874191.

It is an arithmetic number, because the mean of its divisors is an integer number (10879867458).

Almost surely, 2^72532449690 is an apocalyptic number.

72532449690 is an abundant number, since it is smaller than the sum of its proper divisors (101545429638).

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

72532449690 is a wasteful number, since it uses less digits than its factorization.

72532449690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417748333.

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 72532449690 in words is "seventy-two billion, five hundred thirty-two million, four hundred forty-nine thousand, six hundred ninety".