72946179638 has 8 divisors (see below), whose sum is σ = 109434398088. Its totient is φ = 36468046944.

The previous prime is 72946179611. The next prime is 72946179697. The reversal of 72946179638 is 83697164927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72946179638² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2503331 + ... + 2532302.

It is an arithmetic number, because the mean of its divisors is an integer number (13679299761).

Almost surely, 2^72946179638 is an apocalyptic number.

72946179638 is a deficient number, since it is larger than the sum of its proper divisors (36488218450).

72946179638 is a wasteful number, since it uses less digits than its factorization.

72946179638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042878.

The product of its digits is 27433728, while the sum is 62.

The spelling of 72946179638 in words is "seventy-two billion, nine hundred forty-six million, one hundred seventy-nine thousand, six hundred thirty-eight".