45644303640 has 128 divisors (see below), whose sum is σ = 148208256000. Its totient is φ = 11178984960.

The previous prime is 45644303623. The next prime is 45644303641. The reversal of 45644303640 is 4630344654.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45644303641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236925 + ... + 383955.

It is an arithmetic number, because the mean of its divisors is an integer number (1157877000).

Almost surely, 2^45644303640 is an apocalyptic number.

45644303640 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 45644303640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74104128000).

45644303640 is an abundant number, since it is smaller than the sum of its proper divisors (102563952360).

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

45644303640 is a wasteful number, since it uses less digits than its factorization.

45644303640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147257 (or 147253 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 39.

The spelling of 45644303640 in words is "forty-five billion, six hundred forty-four million, three hundred three thousand, six hundred forty".