72819444101 has 4 divisors (see below), whose sum is σ = 75985506912. Its totient is φ = 69653381292.

The previous prime is 72819444091. The next prime is 72819444167. The reversal of 72819444101 is 10144491827.

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 72819444101 - 2⁶ = 72819444037 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 (72819444601) 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, 1583031371 + ... + 1583031416.

It is an arithmetic number, because the mean of its divisors is an integer number (18996376728).

Almost surely, 2^72819444101 is an apocalyptic number.

It is an amenable number.

72819444101 is a deficient number, since it is larger than the sum of its proper divisors (3166062811).

72819444101 is a wasteful number, since it uses less digits than its factorization.

72819444101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3166062810.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 72819444101 in words is "seventy-two billion, eight hundred nineteen million, four hundred forty-four thousand, one hundred one".