72473250657 has 8 divisors (see below), whose sum is σ = 96632300160. Its totient is φ = 48314850800.

The previous prime is 72473250559. The next prime is 72473250671. The reversal of 72473250657 is 75605237427.

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 72473250657 - 2¹² = 72473246561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72473251657) 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, 241144 + ... + 450662.

It is an arithmetic number, because the mean of its divisors is an integer number (12079037520).

Almost surely, 2^72473250657 is an apocalyptic number.

It is an amenable number.

72473250657 is a deficient number, since it is larger than the sum of its proper divisors (24159049503).

72473250657 is a wasteful number, since it uses less digits than its factorization.

72473250657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324823.

The product of its (nonzero) digits is 2469600, while the sum is 48.

The spelling of 72473250657 in words is "seventy-two billion, four hundred seventy-three million, two hundred fifty thousand, six hundred fifty-seven".