78601897108 has 24 divisors (see below), whose sum is σ = 162274886144. Its totient is φ = 32599864800.

The previous prime is 78601897103. The next prime is 78601897111. The reversal of 78601897108 is 80179810687.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78601897103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45276723 + ... + 45278458.

Almost surely, 2^78601897108 is an apocalyptic number.

It is an amenable number.

78601897108 is an abundant number, since it is smaller than the sum of its proper divisors (83672989036).

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

78601897108 is a wasteful number, since it uses less digits than its factorization.

78601897108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90555223 (or 90555221 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 55.

The spelling of 78601897108 in words is "seventy-eight billion, six hundred one million, eight hundred ninety-seven thousand, one hundred eight".