72377989849 has 32 divisors (see below), whose sum is σ = 81174424320. Its totient is φ = 63980928000.

The previous prime is 72377989847. The next prime is 72377989909. The reversal of 72377989849 is 94898977327.

It is not a de Polignac number, because 72377989849 - 2¹ = 72377989847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (73).

It is not an unprimeable number, because it can be changed into a prime (72377989847) 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 31 ways as a sum of consecutive naturals, for example, 28371124 + ... + 28373674.

It is an arithmetic number, because the mean of its divisors is an integer number (2536700760).

Almost surely, 2^72377989849 is an apocalyptic number.

It is an amenable number.

72377989849 is a deficient number, since it is larger than the sum of its proper divisors (8796434471).

72377989849 is a wasteful number, since it uses less digits than its factorization.

72377989849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121.

The product of its digits is 384072192, while the sum is 73.

The spelling of 72377989849 in words is "seventy-two billion, three hundred seventy-seven million, nine hundred eighty-nine thousand, eight hundred forty-nine".