44955815640 has 128 divisors (see below), whose sum is σ = 148138329600. Its totient is φ = 10863452160.

The previous prime is 44955815627. The next prime is 44955815647. The reversal of 44955815640 is 4651855944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44955815647) 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, 376201 + ... + 481080.

It is an arithmetic number, because the mean of its divisors is an integer number (1157330700).

Almost surely, 2^44955815640 is an apocalyptic number.

44955815640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44955815640 is an abundant number, since it is smaller than the sum of its proper divisors (103182513960).

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

44955815640 is a wasteful number, since it uses less digits than its factorization.

44955815640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857337 (or 857333 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 44955815640 in words is "forty-four billion, nine hundred fifty-five million, eight hundred fifteen thousand, six hundred forty".