55649618742 has 16 divisors (see below), whose sum is σ = 111371108400. Its totient is φ = 18537894432.

The previous prime is 55649618729. The next prime is 55649618747. The reversal of 55649618742 is 24781694655.

It is a super-2 number, since 2×55649618742² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55649618747) 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, 2984553 + ... + 3003140.

It is an arithmetic number, because the mean of its divisors is an integer number (6960694275).

Almost surely, 2^55649618742 is an apocalyptic number.

55649618742 is an abundant number, since it is smaller than the sum of its proper divisors (55721489658).

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

55649618742 is a wasteful number, since it uses less digits than its factorization.

55649618742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989247.

The product of its digits is 14515200, while the sum is 57.

The spelling of 55649618742 in words is "fifty-five billion, six hundred forty-nine million, six hundred eighteen thousand, seven hundred forty-two".