78077359198 has 4 divisors (see below), whose sum is σ = 117116038800. Its totient is φ = 39038679598.

The previous prime is 78077359187. The next prime is 78077359259. The reversal of 78077359198 is 89195377087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89195377087 = 541 ⋅164871307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19519339798 + ... + 19519339801.

It is an arithmetic number, because the mean of its divisors is an integer number (29279009700).

Almost surely, 2^78077359198 is an apocalyptic number.

78077359198 is a deficient number, since it is larger than the sum of its proper divisors (39038679602).

78077359198 is a wasteful number, since it uses less digits than its factorization.

78077359198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39038679601.

The product of its (nonzero) digits is 26671680, while the sum is 64.

The spelling of 78077359198 in words is "seventy-eight billion, seventy-seven million, three hundred fifty-nine thousand, one hundred ninety-eight".