72339608077 has 4 divisors (see below), whose sum is σ = 78915936096. Its totient is φ = 65763280060.

The previous prime is 72339608057. The next prime is 72339608101. The reversal of 72339608077 is 77080693327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72339608077 - 2¹¹ = 72339606029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72339608057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3288163993 + ... + 3288164014.

It is an arithmetic number, because the mean of its divisors is an integer number (19728984024).

Almost surely, 2^72339608077 is an apocalyptic number.

It is an amenable number.

72339608077 is a deficient number, since it is larger than the sum of its proper divisors (6576328019).

72339608077 is a wasteful number, since it uses less digits than its factorization.

72339608077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576328018.

The product of its (nonzero) digits is 2667168, while the sum is 52.

The spelling of 72339608077 in words is "seventy-two billion, three hundred thirty-nine million, six hundred eight thousand, seventy-seven".