78365822700 has 144 divisors (see below), whose sum is σ = 247454411904. Its totient is φ = 18989836800.

The previous prime is 78365822693. The next prime is 78365822701. The reversal of 78365822700 is 722856387.

It is a super-2 number, since 2×78365822700² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78365822700.

It is not an unprimeable number, because it can be changed into a prime (78365822701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13286152 + ... + 13292048.

It is an arithmetic number, because the mean of its divisors is an integer number (1718433416).

Almost surely, 2^78365822700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78365822700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123727205952).

78365822700 is an abundant number, since it is smaller than the sum of its proper divisors (169088589204).

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

78365822700 is a wasteful number, since it uses less digits than its factorization.

78365822700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9952 (or 9945 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 78365822700 in words is "seventy-eight billion, three hundred sixty-five million, eight hundred twenty-two thousand, seven hundred".