72199837261 has 8 divisors (see below), whose sum is σ = 74392730720. Its totient is φ = 70019656848.

The previous prime is 72199837249. The next prime is 72199837271. The reversal of 72199837261 is 16273899127.

It is a happy number.

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 72199837261 - 2⁷ = 72199837133 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 (72199837271) 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, 3166731 + ... + 3189448.

It is an arithmetic number, because the mean of its divisors is an integer number (9299091340).

Almost surely, 2^72199837261 is an apocalyptic number.

It is an amenable number.

72199837261 is a deficient number, since it is larger than the sum of its proper divisors (2192893459).

72199837261 is a wasteful number, since it uses less digits than its factorization.

72199837261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6356523.

The product of its digits is 2286144, while the sum is 55.

The spelling of 72199837261 in words is "seventy-two billion, one hundred ninety-nine million, eight hundred thirty-seven thousand, two hundred sixty-one".