72944285878 has 4 divisors (see below), whose sum is σ = 109416428820. Its totient is φ = 36472142938.

The previous prime is 72944285867. The next prime is 72944285927. The reversal of 72944285878 is 87858244927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87858244927 = 30449 ⋅2885423.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18236071468 + ... + 18236071471.

It is an arithmetic number, because the mean of its divisors is an integer number (27354107205).

Almost surely, 2^72944285878 is an apocalyptic number.

72944285878 is a deficient number, since it is larger than the sum of its proper divisors (36472142942).

72944285878 is a wasteful number, since it uses less digits than its factorization.

72944285878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36472142941.

The product of its digits is 72253440, while the sum is 64.

The spelling of 72944285878 in words is "seventy-two billion, nine hundred forty-four million, two hundred eighty-five thousand, eight hundred seventy-eight".