78423287521413 has 16 divisors (see below), whose sum is σ = 104582287305216. Its totient is φ = 52273240489920.

The previous prime is 78423287521391. The next prime is 78423287521421. The reversal of 78423287521413 is 31412578232487.

It is not a de Polignac number, because 78423287521413 - 2⁶ = 78423287521349 is a prime.

It is a super-3 number, since 3×78423287521413³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78423287526413) 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, 462063195 + ... + 462232887.

It is an arithmetic number, because the mean of its divisors is an integer number (6536392956576).

Almost surely, 2^{78423287521413} is an apocalyptic number.

It is an amenable number.

78423287521413 is a deficient number, since it is larger than the sum of its proper divisors (26158999783803).

78423287521413 is a wasteful number, since it uses less digits than its factorization.

78423287521413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195164.

The product of its digits is 18063360, while the sum is 57.

The spelling of 78423287521413 in words is "seventy-eight trillion, four hundred twenty-three billion, two hundred eighty-seven million, five hundred twenty-one thousand, four hundred thirteen".