78287914752 has 144 divisors (see below), whose sum is σ = 221766723360. Its totient is φ = 24432869376.

The previous prime is 78287914741. The next prime is 78287914753. The reversal of 78287914752 is 25741978287.

It is a super-2 number, since 2×78287914752² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78287914753) 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, 2504274 + ... + 2535342.

It is an arithmetic number, because the mean of its divisors is an integer number (1540046690).

Almost surely, 2^78287914752 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 78287914752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110883361680).

78287914752 is an abundant number, since it is smaller than the sum of its proper divisors (143478808608).

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

78287914752 is a wasteful number, since it uses less digits than its factorization.

78287914752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31298 (or 31284 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 60.

The spelling of 78287914752 in words is "seventy-eight billion, two hundred eighty-seven million, nine hundred fourteen thousand, seven hundred fifty-two".