55005500040 has 128 divisors (see below), whose sum is σ = 172308729600. Its totient is φ = 14020807680.

The previous prime is 55005500029. The next prime is 55005500051. The reversal of 55005500040 is 4000550055.

It is an interprime number because it is at equal distance from previous prime (55005500029) and next prime (55005500051).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4600470 + ... + 4612410.

It is an arithmetic number, because the mean of its divisors is an integer number (1346161950).

Almost surely, 2^55005500040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55005500040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86154364800).

55005500040 is an abundant number, since it is smaller than the sum of its proper divisors (117303229560).

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

55005500040 is a wasteful number, since it uses less digits than its factorization.

55005500040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13647 (or 13643 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The spelling of 55005500040 in words is "fifty-five billion, five million, five hundred thousand, forty".