78541881774 has 8 divisors (see below), whose sum is σ = 157083763560. Its totient is φ = 26180627256.

The previous prime is 78541881763. The next prime is 78541881787. The reversal of 78541881774 is 47718814587.

It is a sphenic number, since it is the product of 3 distinct primes.

78541881774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6545156809 + ... + 6545156820.

It is an arithmetic number, because the mean of its divisors is an integer number (19635470445).

Almost surely, 2^78541881774 is an apocalyptic number.

78541881774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78541881774 is a wasteful number, since it uses less digits than its factorization.

78541881774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13090313634.

The product of its digits is 14049280, while the sum is 60.

The spelling of 78541881774 in words is "seventy-eight billion, five hundred forty-one million, eight hundred eighty-one thousand, seven hundred seventy-four".