78253031382 has 16 divisors (see below), whose sum is σ = 158649982320. Its totient is φ = 25727023872.

The previous prime is 78253031333. The next prime is 78253031383. The reversal of 78253031382 is 28313035287.

It is a super-2 number, since 2×78253031382² (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 (78253031383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89329507 + ... + 89330382.

It is an arithmetic number, because the mean of its divisors is an integer number (9915623895).

Almost surely, 2^78253031382 is an apocalyptic number.

78253031382 is an abundant number, since it is smaller than the sum of its proper divisors (80396950938).

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

78253031382 is a wasteful number, since it uses less digits than its factorization.

78253031382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178659967.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 78253031382 in words is "seventy-eight billion, two hundred fifty-three million, thirty-one thousand, three hundred eighty-two".