72477077427 has 16 divisors (see below), whose sum is σ = 107739922080. Its totient is φ = 48153138336.

The previous prime is 72477077411. The next prime is 72477077429.

72477077427 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 72477077427 - 2⁴ = 72477077411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72477077429) 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, 4572868 + ... + 4588689.

It is an arithmetic number, because the mean of its divisors is an integer number (6733745130).

Almost surely, 2^72477077427 is an apocalyptic number.

72477077427 is a deficient number, since it is larger than the sum of its proper divisors (35262844653).

72477077427 is a wasteful number, since it uses less digits than its factorization.

72477077427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9161859 (or 9161853 counting only the distinct ones).

The product of its (nonzero) digits is 7529536, while the sum is 54.

The spelling of 72477077427 in words is "seventy-two billion, four hundred seventy-seven million, seventy-seven thousand, four hundred twenty-seven".