78687151380 has 192 divisors, whose sum is σ = 259275340800. Its totient is φ = 19756483200.

The previous prime is 78687151331. The next prime is 78687151381. The reversal of 78687151380 is 8315178687.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78687151381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1648855 + ... + 1695905.

It is an arithmetic number, because the mean of its divisors is an integer number (1350392400).

Almost surely, 2^78687151380 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 78687151380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129637670400).

78687151380 is an abundant number, since it is smaller than the sum of its proper divisors (180588189420).

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

78687151380 is a wasteful number, since it uses less digits than its factorization.

78687151380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47251 (or 47243 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 78687151380 in words is "seventy-eight billion, six hundred eighty-seven million, one hundred fifty-one thousand, three hundred eighty".