378676544690 has 64 divisors (see below), whose sum is σ = 689781502944. Its totient is φ = 149668866048.

The previous prime is 378676544651. The next prime is 378676544707. The reversal of 378676544690 is 96445676873.

It is a Cunningham number, because it is equal to 615367²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 193491775129 + 185184769561 = 439877^2 + 430331^2 .

It is a super-2 number, since 2×378676544690² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 516611564 + ... + 516612296.

Almost surely, 2^378676544690 is an apocalyptic number.

378676544690 is a deficient number, since it is larger than the sum of its proper divisors (311104958254).

378676544690 is a wasteful number, since it uses less digits than its factorization.

378676544690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 182891520, while the sum is 65.

The spelling of 378676544690 in words is "three hundred seventy-eight billion, six hundred seventy-six million, five hundred forty-four thousand, six hundred ninety".