78214128926 has 4 divisors (see below), whose sum is σ = 117321193392. Its totient is φ = 39107064462.

The previous prime is 78214128917. The next prime is 78214128947. The reversal of 78214128926 is 62982141287.

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

It is a super-2 number, since 2×78214128926² (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 as a sum of consecutive naturals, namely, 19553532230 + ... + 19553532233.

It is an arithmetic number, because the mean of its divisors is an integer number (29330298348).

Almost surely, 2^78214128926 is an apocalyptic number.

78214128926 is a deficient number, since it is larger than the sum of its proper divisors (39107064466).

78214128926 is a wasteful number, since it uses less digits than its factorization.

78214128926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39107064465.

The product of its digits is 774144, while the sum is 50.

The spelling of 78214128926 in words is "seventy-eight billion, two hundred fourteen million, one hundred twenty-eight thousand, nine hundred twenty-six".