378856414281 has 4 divisors (see below), whose sum is σ = 505141885712. Its totient is φ = 252570942852.

The previous prime is 378856414267. The next prime is 378856414283. The reversal of 378856414281 is 182414658873.

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 378856414281 - 2¹⁸ = 378856152137 is a prime.

It is a super-2 number, since 2×378856414281² (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 (378856414283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63142735711 + ... + 63142735716.

It is an arithmetic number, because the mean of its divisors is an integer number (126285471428).

Almost surely, 2^378856414281 is an apocalyptic number.

It is an amenable number.

378856414281 is a deficient number, since it is larger than the sum of its proper divisors (126285471431).

378856414281 is a wasteful number, since it uses less digits than its factorization.

378856414281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126285471430.

The product of its digits is 10321920, while the sum is 57.

The spelling of 378856414281 in words is "three hundred seventy-eight billion, eight hundred fifty-six million, four hundred fourteen thousand, two hundred eighty-one".