78392250271 has 16 divisors (see below), whose sum is σ = 84462600960. Its totient is φ = 72535901760.

The previous prime is 78392250221. The next prime is 78392250317. The reversal of 78392250271 is 17205229387.

It is not a de Polignac number, because 78392250271 - 2⁹ = 78392249759 is a prime.

It is a super-2 number, since 2×78392250271² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78392250221) 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, 127206 + ... + 415891.

It is an arithmetic number, because the mean of its divisors is an integer number (5278912560).

Almost surely, 2^78392250271 is an apocalyptic number.

78392250271 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

78392250271 is a deficient number, since it is larger than the sum of its proper divisors (6070350689).

78392250271 is a wasteful number, since it uses less digits than its factorization.

78392250271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543294.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 78392250271 in words is "seventy-eight billion, three hundred ninety-two million, two hundred fifty thousand, two hundred seventy-one".