78749667098 has 8 divisors (see below), whose sum is σ = 122197759380. Its totient is φ = 38017080640.

The previous prime is 78749667083. The next prime is 78749667109. The reversal of 78749667098 is 89076694787.

It can be written as a sum of positive squares in 2 ways, for example, as 75650852209 + 3098814889 = 275047^2 + 55667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 678876383 + ... + 678876498.

Almost surely, 2^78749667098 is an apocalyptic number.

78749667098 is a deficient number, since it is larger than the sum of its proper divisors (43448092282).

78749667098 is a wasteful number, since it uses less digits than its factorization.

78749667098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357752912.

The product of its (nonzero) digits is 256048128, while the sum is 71.

The spelling of 78749667098 in words is "seventy-eight billion, seven hundred forty-nine million, six hundred sixty-seven thousand, ninety-eight".