72658486117 has 4 divisors (see below), whose sum is σ = 83038269856. Its totient is φ = 62278702380.

The previous prime is 72658486111. The next prime is 72658486133. The reversal of 72658486117 is 71168485627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72658486117 - 2¹⁵ = 72658453349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72658486111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5189891859 + ... + 5189891872.

It is an arithmetic number, because the mean of its divisors is an integer number (20759567464).

Almost surely, 2^72658486117 is an apocalyptic number.

It is an amenable number.

72658486117 is a deficient number, since it is larger than the sum of its proper divisors (10379783739).

72658486117 is a wasteful number, since it uses less digits than its factorization.

72658486117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10379783738.

The product of its digits is 4515840, while the sum is 55.

The spelling of 72658486117 in words is "seventy-two billion, six hundred fifty-eight million, four hundred eighty-six thousand, one hundred seventeen".