78378668110 has 16 divisors (see below), whose sum is σ = 141643685232. Its totient is φ = 31226560000.

The previous prime is 78378668107. The next prime is 78378668161. The reversal of 78378668110 is 1186687387.

It is a super-2 number, since 2×78378668110² (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, 15610771 + ... + 15615790.

It is an arithmetic number, because the mean of its divisors is an integer number (8852730327).

Almost surely, 2^78378668110 is an apocalyptic number.

78378668110 is a deficient number, since it is larger than the sum of its proper divisors (63265017122).

78378668110 is a wasteful number, since it uses less digits than its factorization.

78378668110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31226819.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The spelling of 78378668110 in words is "seventy-eight billion, three hundred seventy-eight million, six hundred sixty-eight thousand, one hundred ten".