55891547944 has 16 divisors (see below), whose sum is σ = 104847042420. Its totient is φ = 27932336640.

The previous prime is 55891547909. The next prime is 55891547951. The reversal of 55891547944 is 44974519855.

It can be written as a sum of positive squares in 2 ways, for example, as 45736955044 + 10154592900 = 213862^2 + 100770^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661979 + ... + 1695274.

Almost surely, 2^55891547944 is an apocalyptic number.

It is an amenable number.

55891547944 is a deficient number, since it is larger than the sum of its proper divisors (48955494476).

55891547944 is a wasteful number, since it uses less digits than its factorization.

55891547944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359340 (or 3359336 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 61.

The spelling of 55891547944 in words is "fifty-five billion, eight hundred ninety-one million, five hundred forty-seven thousand, nine hundred forty-four".