78121414354 has 16 divisors (see below), whose sum is σ = 119960340192. Its totient is φ = 38135438208.

The previous prime is 78121414333. The next prime is 78121414379. The reversal of 78121414354 is 45341412187.

It is a super-2 number, since 2×78121414354² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4344 + ... + 395299.

It is an arithmetic number, because the mean of its divisors is an integer number (7497521262).

Almost surely, 2^78121414354 is an apocalyptic number.

78121414354 is a deficient number, since it is larger than the sum of its proper divisors (41838925838).

78121414354 is a wasteful number, since it uses less digits than its factorization.

78121414354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401961.

The product of its digits is 107520, while the sum is 40.

The spelling of 78121414354 in words is "seventy-eight billion, one hundred twenty-one million, four hundred fourteen thousand, three hundred fifty-four".