78908134726 has 4 divisors (see below), whose sum is σ = 118362202092. Its totient is φ = 39454067362.

The previous prime is 78908134703. The next prime is 78908134817. The reversal of 78908134726 is 62743180987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62743180987 = 257 ⋅244136891.

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, 19727033680 + ... + 19727033683.

It is an arithmetic number, because the mean of its divisors is an integer number (29590550523).

Almost surely, 2^78908134726 is an apocalyptic number.

78908134726 is a deficient number, since it is larger than the sum of its proper divisors (39454067366).

78908134726 is a wasteful number, since it uses less digits than its factorization.

78908134726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39454067365.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 78908134726 in words is "seventy-eight billion, nine hundred eight million, one hundred thirty-four thousand, seven hundred twenty-six".