78488733678 has 64 divisors (see below), whose sum is σ = 170356592448. Its totient is φ = 24010465280.

The previous prime is 78488733649. The next prime is 78488733683. The reversal of 78488733678 is 87633788487.

It is a super-2 number, since 2×78488733678² (a number of 23 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 31 ways as a sum of consecutive naturals, for example, 10355026 + ... + 10362602.

It is an arithmetic number, because the mean of its divisors is an integer number (2661821757).

Almost surely, 2^78488733678 is an apocalyptic number.

78488733678 is an abundant number, since it is smaller than the sum of its proper divisors (91867858770).

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

78488733678 is a wasteful number, since it uses less digits than its factorization.

78488733678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10117.

The product of its digits is 303464448, while the sum is 69.

The spelling of 78488733678 in words is "seventy-eight billion, four hundred eighty-eight million, seven hundred thirty-three thousand, six hundred seventy-eight".