72894458613 has 16 divisors (see below), whose sum is σ = 98319024000. Its totient is φ = 48034708800.

The previous prime is 72894458603. The next prime is 72894458617. The reversal of 72894458613 is 31685449827.

It is a happy number.

It is not a de Polignac number, because 72894458613 - 2⁴ = 72894458597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72894458617) 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, 19318 + ... + 382311.

It is an arithmetic number, because the mean of its divisors is an integer number (6144939000).

Almost surely, 2^72894458613 is an apocalyptic number.

It is an amenable number.

72894458613 is a deficient number, since it is larger than the sum of its proper divisors (25424565387).

72894458613 is a wasteful number, since it uses less digits than its factorization.

72894458613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402332.

The product of its digits is 11612160, while the sum is 57.

The spelling of 72894458613 in words is "seventy-two billion, eight hundred ninety-four million, four hundred fifty-eight thousand, six hundred thirteen".