78842190626 has 4 divisors (see below), whose sum is σ = 118263285942. Its totient is φ = 39421095312.

The previous prime is 78842190607. The next prime is 78842190643. The reversal of 78842190626 is 62609124887.

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

It can be written as a sum of positive squares in only one way, i.e., 76314615001 + 2527575625 = 276251^2 + 50275^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19710547655 + ... + 19710547658.

Almost surely, 2^78842190626 is an apocalyptic number.

78842190626 is a deficient number, since it is larger than the sum of its proper divisors (39421095316).

78842190626 is a wasteful number, since it uses less digits than its factorization.

78842190626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39421095315.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 78842190626 in words is "seventy-eight billion, eight hundred forty-two million, one hundred ninety thousand, six hundred twenty-six".