55981838351 has 8 divisors (see below), whose sum is σ = 58087218000. Its totient is φ = 53888123520.

The previous prime is 55981838347. The next prime is 55981838359. The reversal of 55981838351 is 15383818955.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55981838351 - 2² = 55981838347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55981838359) 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, 2906426 + ... + 2925623.

It is an arithmetic number, because the mean of its divisors is an integer number (7260902250).

Almost surely, 2^55981838351 is an apocalyptic number.

55981838351 is a deficient number, since it is larger than the sum of its proper divisors (2105379649).

55981838351 is a wasteful number, since it uses less digits than its factorization.

55981838351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5832409.

The product of its digits is 5184000, while the sum is 56.

The spelling of 55981838351 in words is "fifty-five billion, nine hundred eighty-one million, eight hundred thirty-eight thousand, three hundred fifty-one".