78951141694 has 4 divisors (see below), whose sum is σ = 118426712544. Its totient is φ = 39475570846.

The previous prime is 78951141653. The next prime is 78951141707. The reversal of 78951141694 is 49614115987.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19737785422 + ... + 19737785425.

It is an arithmetic number, because the mean of its divisors is an integer number (29606678136).

Almost surely, 2^78951141694 is an apocalyptic number.

78951141694 is a deficient number, since it is larger than the sum of its proper divisors (39475570850).

78951141694 is a wasteful number, since it uses less digits than its factorization.

78951141694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39475570849.

The product of its digits is 2177280, while the sum is 55.

The spelling of 78951141694 in words is "seventy-eight billion, nine hundred fifty-one million, one hundred forty-one thousand, six hundred ninety-four".