55501622730 has 96 divisors (see below), whose sum is σ = 149873068800. Its totient is φ = 14239948416.

The previous prime is 55501622723. The next prime is 55501622749. The reversal of 55501622730 is 3722610555.

55501622730 is a `hidden beast` number, since 5 + 550 + 16 + 22 + 73 + 0 = 666.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 138376 + ... + 360764.

It is an arithmetic number, because the mean of its divisors is an integer number (1561177800).

Almost surely, 2^55501622730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55501622730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74936534400).

55501622730 is an abundant number, since it is smaller than the sum of its proper divisors (94371446070).

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

55501622730 is a wasteful number, since it uses less digits than its factorization.

55501622730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222508 (or 222505 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The spelling of 55501622730 in words is "fifty-five billion, five hundred one million, six hundred twenty-two thousand, seven hundred thirty".