15445352240 has 40 divisors (see below), whose sum is σ = 35942461440. Its totient is φ = 6172632576.

The previous prime is 15445352207. The next prime is 15445352243. The reversal of 15445352240 is 4225354451.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 15445352240.

It is not an unprimeable number, because it can be changed into a prime (15445352243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4817 + ... + 175823.

It is an arithmetic number, because the mean of its divisors is an integer number (898561536).

Almost surely, 2^15445352240 is an apocalyptic number.

15445352240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15445352240 is an abundant number, since it is smaller than the sum of its proper divisors (20497109200).

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

15445352240 is a wasteful number, since it uses less digits than its factorization.

15445352240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172149 (or 172143 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 15445352240 in words is "fifteen billion, four hundred forty-five million, three hundred fifty-two thousand, two hundred forty".