78379092871 has 4 divisors (see below), whose sum is σ = 78384803200. Its totient is φ = 78373382544.

The previous prime is 78379092839. The next prime is 78379092893. The reversal of 78379092871 is 17829097387.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17829097387 = 6089 ⋅2928083.

It is a cyclic number.

It is not a de Polignac number, because 78379092871 - 2⁵ = 78379092839 is a prime.

It is a super-2 number, since 2×78379092871² (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 (78379092271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2834526 + ... + 2862043.

It is an arithmetic number, because the mean of its divisors is an integer number (19596200800).

Almost surely, 2^78379092871 is an apocalyptic number.

78379092871 is a deficient number, since it is larger than the sum of its proper divisors (5710329).

78379092871 is a wasteful number, since it uses less digits than its factorization.

78379092871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710328.

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 78379092871 in words is "seventy-eight billion, three hundred seventy-nine million, ninety-two thousand, eight hundred seventy-one".