78851433774 has 16 divisors (see below), whose sum is σ = 159474810960. Its totient is φ = 25988487360.

The previous prime is 78851433769. The next prime is 78851433833. The reversal of 78851433774 is 47733415887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73830397 + ... + 73831464.

It is an arithmetic number, because the mean of its divisors is an integer number (9967175685).

Almost surely, 2^78851433774 is an apocalyptic number.

78851433774 is an abundant number, since it is smaller than the sum of its proper divisors (80623377186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78851433774 is a wasteful number, since it uses less digits than its factorization.

78851433774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147661955.

The product of its digits is 15805440, while the sum is 57.

The spelling of 78851433774 in words is "seventy-eight billion, eight hundred fifty-one million, four hundred thirty-three thousand, seven hundred seventy-four".