556941891378 has 16 divisors (see below), whose sum is σ = 1115762177376. Its totient is φ = 185334231360.

The previous prime is 556941891371. The next prime is 556941891409. The reversal of 556941891378 is 873198149655.

It is not an unprimeable number, because it can be changed into a prime (556941891371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78262588 + ... + 78269703.

It is an arithmetic number, because the mean of its divisors is an integer number (69735136086).

Almost surely, 2^556941891378 is an apocalyptic number.

556941891378 is an abundant number, since it is smaller than the sum of its proper divisors (558820285998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556941891378 is a wasteful number, since it uses less digits than its factorization.

556941891378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156532889.

The product of its digits is 65318400, while the sum is 66.

The spelling of 556941891378 in words is "five hundred fifty-six billion, nine hundred forty-one million, eight hundred ninety-one thousand, three hundred seventy-eight".