78508245814 has 4 divisors (see below), whose sum is σ = 117762368724. Its totient is φ = 39254122906.

The previous prime is 78508245799. The next prime is 78508245833. The reversal of 78508245814 is 41854280587.

It is a semiprime because it is the product of two primes.

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, 19627061452 + ... + 19627061455.

It is an arithmetic number, because the mean of its divisors is an integer number (29440592181).

Almost surely, 2^78508245814 is an apocalyptic number.

78508245814 is a deficient number, since it is larger than the sum of its proper divisors (39254122910).

78508245814 is a wasteful number, since it uses less digits than its factorization.

78508245814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39254122909.

The product of its (nonzero) digits is 2867200, while the sum is 52.

The spelling of 78508245814 in words is "seventy-eight billion, five hundred eight million, two hundred forty-five thousand, eight hundred fourteen".