15357730640 has 160 divisors (see below), whose sum is σ = 43656205824. Its totient is φ = 4904386560.

The previous prime is 15357730613. The next prime is 15357730649. The reversal of 15357730640 is 4603775351.

It is a happy number.

15357730640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15357730649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 915125 + ... + 931755.

Almost surely, 2^15357730640 is an apocalyptic number.

15357730640 is a gapful number since it is divisible by the number (10) 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 15357730640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21828102912).

15357730640 is an abundant number, since it is smaller than the sum of its proper divisors (28298475184).

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

15357730640 is a wasteful number, since it uses less digits than its factorization.

15357730640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16765 (or 16759 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 41.

The spelling of 15357730640 in words is "fifteen billion, three hundred fifty-seven million, seven hundred thirty thousand, six hundred forty".