72489077577 has 32 divisors (see below), whose sum is σ = 124564684800. Its totient is φ = 40804079184.

The previous prime is 72489077537. The next prime is 72489077587. The reversal of 72489077577 is 77577098427.

It is not a de Polignac number, because 72489077577 - 2¹⁶ = 72489012041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (72489077537) 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, 2849577 + ... + 2874902.

It is an arithmetic number, because the mean of its divisors is an integer number (3892646400).

Almost surely, 2^72489077577 is an apocalyptic number.

It is an amenable number.

72489077577 is a deficient number, since it is larger than the sum of its proper divisors (52075607223).

72489077577 is a wasteful number, since it uses less digits than its factorization.

72489077577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5724562 (or 5724556 counting only the distinct ones).

The product of its (nonzero) digits is 48404160, while the sum is 63.

The spelling of 72489077577 in words is "seventy-two billion, four hundred eighty-nine million, seventy-seven thousand, five hundred seventy-seven".