78121414353 has 32 divisors (see below), whose sum is σ = 112805363200. Its totient is φ = 47937453696.

The previous prime is 78121414333. The next prime is 78121414379. The reversal of 78121414353 is 35341412187.

It is not a de Polignac number, because 78121414353 - 2⁹ = 78121413841 is a prime.

It is a super-2 number, since 2×78121414353² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78121414333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138678 + ... + 418896.

It is an arithmetic number, because the mean of its divisors is an integer number (3525167600).

Almost surely, 2^78121414353 is an apocalyptic number.

78121414353 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

78121414353 is a deficient number, since it is larger than the sum of its proper divisors (34683948847).

78121414353 is a wasteful number, since it uses less digits than its factorization.

78121414353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280381.

The product of its digits is 80640, while the sum is 39.

The spelling of 78121414353 in words is "seventy-eight billion, one hundred twenty-one million, four hundred fourteen thousand, three hundred fifty-three".