72437883786 has 12 divisors (see below), whose sum is σ = 156948748242. Its totient is φ = 24145961256.

The previous prime is 72437883767. The next prime is 72437883787. The reversal of 72437883786 is 68738873427.

It can be written as a sum of positive squares in only one way, i.e., 50631750225 + 21806133561 = 225015^2 + 147669^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72437883787) 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 5 ways as a sum of consecutive naturals, for example, 2012163421 + ... + 2012163456.

Almost surely, 2^72437883786 is an apocalyptic number.

72437883786 is an abundant number, since it is smaller than the sum of its proper divisors (84510864456).

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

72437883786 is a wasteful number, since it uses less digits than its factorization.

72437883786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024326885 (or 4024326882 counting only the distinct ones).

The product of its digits is 75866112, while the sum is 63.

The spelling of 72437883786 in words is "seventy-two billion, four hundred thirty-seven million, eight hundred eighty-three thousand, seven hundred eighty-six".