78881723152 has 20 divisors (see below), whose sum is σ = 153040172560. Its totient is φ = 39387485088.

The previous prime is 78881723143. The next prime is 78881723159. The reversal of 78881723152 is 25132718887.

It is a self number, because there is not a number n which added to its sum of digits gives 78881723152.

It is not an unprimeable number, because it can be changed into a prime (78881723159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3323838 + ... + 3347485.

It is an arithmetic number, because the mean of its divisors is an integer number (7652008628).

Almost surely, 2^78881723152 is an apocalyptic number.

It is an amenable number.

78881723152 is a deficient number, since it is larger than the sum of its proper divisors (74158449408).

78881723152 is a wasteful number, since it uses less digits than its factorization.

78881723152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672070 (or 6672064 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 52.

The spelling of 78881723152 in words is "seventy-eight billion, eight hundred eighty-one million, seven hundred twenty-three thousand, one hundred fifty-two".