78374675878 has 16 divisors (see below), whose sum is σ = 117687150720. Its totient is φ = 39145651776.

The previous prime is 78374675843. The next prime is 78374675887. The reversal of 78374675878 is 87857647387.

It is a super-2 number, since 2×78374675878² (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 7 ways as a sum of consecutive naturals, for example, 8838475 + ... + 8847337.

It is an arithmetic number, because the mean of its divisors is an integer number (7355446920).

Almost surely, 2^78374675878 is an apocalyptic number.

78374675878 is a deficient number, since it is larger than the sum of its proper divisors (39312474842).

78374675878 is a wasteful number, since it uses less digits than its factorization.

78374675878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13071.

The product of its digits is 442552320, while the sum is 70.

The spelling of 78374675878 in words is "seventy-eight billion, three hundred seventy-four million, six hundred seventy-five thousand, eight hundred seventy-eight".