55193445900 has 144 divisors (see below), whose sum is σ = 177584779680. Its totient is φ = 14705971200.

The previous prime is 55193445889. The next prime is 55193445907. The reversal of 55193445900 is 954439155.

55193445900 is a `hidden beast` number, since 5 + 5 + 19 + 3 + 44 + 590 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (55193445907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3494020 + ... + 3509780.

Almost surely, 2^55193445900 is an apocalyptic number.

55193445900 is a gapful number since it is divisible by the number (50) 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 55193445900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88792389840).

55193445900 is an abundant number, since it is smaller than the sum of its proper divisors (122391333780).

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

55193445900 is a wasteful number, since it uses less digits than its factorization.

55193445900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17081 (or 17068 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 55193445900 in words is "fifty-five billion, one hundred ninety-three million, four hundred forty-five thousand, nine hundred".