378178871873 has 4 divisors (see below), whose sum is σ = 412558769328. Its totient is φ = 343798974420.

The previous prime is 378178871839. The next prime is 378178871887.

378178871873 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 378178871873 - 2⁶ = 378178871809 is a prime.

It is a super-2 number, since 2×378178871873² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378178871803) 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, 17189948711 + ... + 17189948732.

It is an arithmetic number, because the mean of its divisors is an integer number (103139692332).

Almost surely, 2^378178871873 is an apocalyptic number.

It is an amenable number.

378178871873 is a deficient number, since it is larger than the sum of its proper divisors (34379897455).

378178871873 is a wasteful number, since it uses less digits than its factorization.

378178871873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34379897454.

The product of its digits is 88510464, while the sum is 68.

The spelling of 378178871873 in words is "three hundred seventy-eight billion, one hundred seventy-eight million, eight hundred seventy-one thousand, eight hundred seventy-three".