55651050616 has 64 divisors (see below), whose sum is σ = 126371520000. Its totient is φ = 22443454080.

The previous prime is 55651050569. The next prime is 55651050617. The reversal of 55651050616 is 61605015655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55651050617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16980 + ... + 334051.

It is an arithmetic number, because the mean of its divisors is an integer number (1974555000).

Almost surely, 2^55651050616 is an apocalyptic number.

55651050616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55651050616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63185760000).

55651050616 is an abundant number, since it is smaller than the sum of its proper divisors (70720469384).

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

55651050616 is a wasteful number, since it uses less digits than its factorization.

55651050616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351212 (or 351208 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 55651050616 in words is "fifty-five billion, six hundred fifty-one million, fifty thousand, six hundred sixteen".