72466446577 has 30 divisors (see below), whose sum is σ = 85830712482. Its totient is φ = 61167941856.

The previous prime is 72466446571. The next prime is 72466446581. The reversal of 72466446577 is 77564466427.

It can be written as a sum of positive squares in only one way, i.e., 63532227136 + 8934219441 = 252056^2 + 94521^2 .

It is not a de Polignac number, because 72466446577 - 2¹¹ = 72466444529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72466446571) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 112700218 + ... + 112700860.

Almost surely, 2^72466446577 is an apocalyptic number.

It is an amenable number.

72466446577 is a deficient number, since it is larger than the sum of its proper divisors (13364265905).

72466446577 is an frugal number, since it uses more digits than its factorization.

72466446577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 723 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 58.

The spelling of 72466446577 in words is "seventy-two billion, four hundred sixty-six million, four hundred forty-six thousand, five hundred seventy-seven".