55042087917 has 8 divisors (see below), whose sum is σ = 73395565696. Its totient is φ = 36691667712.

The previous prime is 55042087907. The next prime is 55042087949. The reversal of 55042087917 is 71978024055.

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

It is not a de Polignac number, because 55042087917 - 2⁴ = 55042087901 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 (55042087907) 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, 722053 + ... + 794634.

It is an arithmetic number, because the mean of its divisors is an integer number (9174445712).

Almost surely, 2^55042087917 is an apocalyptic number.

It is an amenable number.

55042087917 is a deficient number, since it is larger than the sum of its proper divisors (18353477779).

55042087917 is a wasteful number, since it uses less digits than its factorization.

55042087917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528787.

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 55042087917 in words is "fifty-five billion, forty-two million, eighty-seven thousand, nine hundred seventeen".