72994659191 has 4 divisors (see below), whose sum is σ = 72996110712. Its totient is φ = 72993207672.

The previous prime is 72994659163. The next prime is 72994659223. The reversal of 72994659191 is 19195649927.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72994659191 - 2²⁶ = 72927550327 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 (72994659121) 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, 647516 + ... + 751841.

It is an arithmetic number, because the mean of its divisors is an integer number (18249027678).

Almost surely, 2^72994659191 is an apocalyptic number.

72994659191 is a deficient number, since it is larger than the sum of its proper divisors (1451521).

72994659191 is a wasteful number, since it uses less digits than its factorization.

72994659191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451520.

The product of its digits is 11022480, while the sum is 62.

The spelling of 72994659191 in words is "seventy-two billion, nine hundred ninety-four million, six hundred fifty-nine thousand, one hundred ninety-one".