72773772737 has 16 divisors (see below), whose sum is σ = 77400385920. Its totient is φ = 68186166528.

The previous prime is 72773772683. The next prime is 72773772787. The reversal of 72773772737 is 73727737727.

It is a cyclic number.

It is not a de Polignac number, because 72773772737 - 2¹⁴ = 72773756353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72773772787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4232564 + ... + 4249722.

It is an arithmetic number, because the mean of its divisors is an integer number (4837524120).

Almost surely, 2^72773772737 is an apocalyptic number.

It is an amenable number.

72773772737 is a deficient number, since it is larger than the sum of its proper divisors (4626613183).

72773772737 is a wasteful number, since it uses less digits than its factorization.

72773772737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18280.

The product of its digits is 29647548, while the sum is 59.

The spelling of 72773772737 in words is "seventy-two billion, seven hundred seventy-three million, seven hundred seventy-two thousand, seven hundred thirty-seven".