45555205440 has 112 divisors (see below), whose sum is σ = 144753250752. Its totient is φ = 12138356736.

The previous prime is 45555205417. The next prime is 45555205441. The reversal of 45555205440 is 4450255554.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45555205441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1226827 + ... + 1263413.

Almost surely, 2^45555205440 is an apocalyptic number.

45555205440 is a gapful number since it is divisible by the number (40) 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 45555205440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72376625376).

45555205440 is an abundant number, since it is smaller than the sum of its proper divisors (99198045312).

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

45555205440 is a wasteful number, since it uses less digits than its factorization.

45555205440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37904 (or 37894 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 39.

The spelling of 45555205440 in words is "forty-five billion, five hundred fifty-five million, two hundred five thousand, four hundred forty".