78253031379 has 16 divisors (see below), whose sum is σ = 105702912000. Its totient is φ = 51486479616.

The previous prime is 78253031333. The next prime is 78253031383. The reversal of 78253031379 is 97313035287.

It is not a de Polignac number, because 78253031379 - 2¹¹ = 78253029331 is a prime.

It is a super-2 number, since 2×78253031379² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78253031179) 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, 499747 + ... + 637379.

It is an arithmetic number, because the mean of its divisors is an integer number (6606432000).

Almost surely, 2^78253031379 is an apocalyptic number.

78253031379 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

78253031379 is a deficient number, since it is larger than the sum of its proper divisors (27449880621).

78253031379 is a wasteful number, since it uses less digits than its factorization.

78253031379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140114.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 78253031379 in words is "seventy-eight billion, two hundred fifty-three million, thirty-one thousand, three hundred seventy-nine".