78506672443444 has 48 divisors (see below), whose sum is σ = 158462471059200. Its totient is φ = 33335223376896.

The previous prime is 78506672443361. The next prime is 78506672443471. The reversal of 78506672443444 is 44434427660587.

It is a super-2 number, since 2×78506672443444² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56054097 + ... + 57437575.

It is an arithmetic number, because the mean of its divisors is an integer number (3301301480400).

Almost surely, 2^{78506672443444} is an apocalyptic number.

It is an amenable number.

78506672443444 is an abundant number, since it is smaller than the sum of its proper divisors (79955798615756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78506672443444 is a wasteful number, since it uses less digits than its factorization.

78506672443444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402192 (or 1402190 counting only the distinct ones).

The product of its (nonzero) digits is 433520640, while the sum is 64.

The spelling of 78506672443444 in words is "seventy-eight trillion, five hundred six billion, six hundred seventy-two million, four hundred forty-three thousand, four hundred forty-four".