79181380788 has 24 divisors (see below), whose sum is σ = 185049372480. Its totient is φ = 26351962560.

The previous prime is 79181380783. The next prime is 79181380793. The reversal of 79181380788 is 88708318197.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79181380783) and next prime (79181380793).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79181380781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5220993 + ... + 5236136.

It is an arithmetic number, because the mean of its divisors is an integer number (7710390520).

Almost surely, 2^79181380788 is an apocalyptic number.

It is an amenable number.

79181380788 is an abundant number, since it is smaller than the sum of its proper divisors (105867991692).

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

79181380788 is a wasteful number, since it uses less digits than its factorization.

79181380788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10457767 (or 10457765 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 60.

The spelling of 79181380788 in words is "seventy-nine billion, one hundred eighty-one million, three hundred eighty thousand, seven hundred eighty-eight".