72466326557 has 8 divisors (see below), whose sum is σ = 73724589600. Its totient is φ = 71209064304.

The previous prime is 72466326509. The next prime is 72466326631. The reversal of 72466326557 is 75562366427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72466326557 - 2⁸ = 72466326301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72466326499 and 72466326508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72466323557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103382 + ... + 394487.

It is an arithmetic number, because the mean of its divisors is an integer number (9215573700).

Almost surely, 2^72466326557 is an apocalyptic number.

It is an amenable number.

72466326557 is a deficient number, since it is larger than the sum of its proper divisors (1258263043).

72466326557 is a wasteful number, since it uses less digits than its factorization.

72466326557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500395.

The product of its digits is 12700800, while the sum is 53.

The spelling of 72466326557 in words is "seventy-two billion, four hundred sixty-six million, three hundred twenty-six thousand, five hundred fifty-seven".