78180754377516 has 48 divisors (see below), whose sum is σ = 210824506206720. Its totient is φ = 22086376836480.

The previous prime is 78180754377511. The next prime is 78180754377541. The reversal of 78180754377516 is 61577345708187.

It is a super-2 number, since 2×78180754377516² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78180754377511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5228774920 + ... + 5228789871.

It is an arithmetic number, because the mean of its divisors is an integer number (4392177212640).

Almost surely, 2^{78180754377516} is an apocalyptic number.

It is an amenable number.

78180754377516 is an abundant number, since it is smaller than the sum of its proper divisors (132643751829204).

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

78180754377516 is a wasteful number, since it uses less digits than its factorization.

78180754377516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10457564894 (or 10457564892 counting only the distinct ones).

The product of its (nonzero) digits is 276595200, while the sum is 69.

The spelling of 78180754377516 in words is "seventy-eight trillion, one hundred eighty billion, seven hundred fifty-four million, three hundred seventy-seven thousand, five hundred sixteen".