78252157306180 has 192 divisors, whose sum is σ = 194100140602368. Its totient is φ = 26124792791040.

The previous prime is 78252157306177. The next prime is 78252157306247. The reversal of 78252157306180 is 8160375125287.

It is a happy number.

It is a super-2 number, since 2×78252157306180² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3205335654 + ... + 3205360066.

It is an arithmetic number, because the mean of its divisors is an integer number (1010938232304).

Almost surely, 2^{78252157306180} 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 78252157306180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97050070301184).

78252157306180 is an abundant number, since it is smaller than the sum of its proper divisors (115847983296188).

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

78252157306180 is a wasteful number, since it uses less digits than its factorization.

78252157306180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30446 (or 30444 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 78252157306180 in words is "seventy-eight trillion, two hundred fifty-two billion, one hundred fifty-seven million, three hundred six thousand, one hundred eighty".