55518883885 has 8 divisors (see below), whose sum is σ = 66645102816. Its totient is φ = 44400145680.

The previous prime is 55518883873. The next prime is 55518883897. The reversal of 55518883885 is 58838881555.

It is an interprime number because it is at equal distance from previous prime (55518883873) and next prime (55518883897).

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

It is not a de Polignac number, because 55518883885 - 2⁵ = 55518883853 is a prime.

It is a super-2 number, since 2×55518883885² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853839 + ... + 1883548.

It is an arithmetic number, because the mean of its divisors is an integer number (8330637852).

Almost surely, 2^55518883885 is an apocalyptic number.

It is an amenable number.

55518883885 is a deficient number, since it is larger than the sum of its proper divisors (11126218931).

55518883885 is a wasteful number, since it uses less digits than its factorization.

55518883885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740363.

The product of its digits is 61440000, while the sum is 64.

It can be divided in two parts, 5551 and 8883885, that added together give a triangular number (8889436 = T₄₂₁₆).

The spelling of 55518883885 in words is "fifty-five billion, five hundred eighteen million, eight hundred eighty-three thousand, eight hundred eighty-five".