78178353332 has 12 divisors (see below), whose sum is σ = 136942298976. Its totient is φ = 39051982200.

The previous prime is 78178353329. The next prime is 78178353367. The reversal of 78178353332 is 23335387187.

It is a super-2 number, since 2×78178353332² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9293888 + ... + 9302295.

It is an arithmetic number, because the mean of its divisors is an integer number (11411858248).

Almost surely, 2^78178353332 is an apocalyptic number.

It is an amenable number.

78178353332 is a deficient number, since it is larger than the sum of its proper divisors (58763945644).

78178353332 is a wasteful number, since it uses less digits than its factorization.

78178353332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18597238 (or 18597236 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 50.

The spelling of 78178353332 in words is "seventy-eight billion, one hundred seventy-eight million, three hundred fifty-three thousand, three hundred thirty-two".