378861623674 has 4 divisors (see below), whose sum is σ = 568292435514. Its totient is φ = 189430811836.

The previous prime is 378861623551. The next prime is 378861623681. The reversal of 378861623674 is 476326168873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476326168873 = 61331 ⋅7766483.

It can be written as a sum of positive squares in only one way, i.e., 352830060025 + 26031563649 = 593995^2 + 161343^2 .

It is a super-2 number, since 2×378861623674² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94715405917 + ... + 94715405920.

Almost surely, 2^378861623674 is an apocalyptic number.

378861623674 is a deficient number, since it is larger than the sum of its proper divisors (189430811840).

378861623674 is a wasteful number, since it uses less digits than its factorization.

378861623674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189430811839.

The product of its digits is 48771072, while the sum is 61.

The spelling of 378861623674 in words is "three hundred seventy-eight billion, eight hundred sixty-one million, six hundred twenty-three thousand, six hundred seventy-four".