78472184956 has 24 divisors (see below), whose sum is σ = 150033192624. Its totient is φ = 35616161280.

The previous prime is 78472184953. The next prime is 78472184983. The reversal of 78472184956 is 65948127487.

It is a junction number, because it is equal to n+sod(n) for n = 78472184894 and 78472184903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78472184951) 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, 1295395 + ... + 1354618.

It is an arithmetic number, because the mean of its divisors is an integer number (6251383026).

Almost surely, 2^78472184956 is an apocalyptic number.

It is an amenable number.

78472184956 is a deficient number, since it is larger than the sum of its proper divisors (71561007668).

78472184956 is a wasteful number, since it uses less digits than its factorization.

78472184956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650701 (or 2650699 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 61.

The spelling of 78472184956 in words is "seventy-eight billion, four hundred seventy-two million, one hundred eighty-four thousand, nine hundred fifty-six".