15793262640 has 120 divisors (see below), whose sum is σ = 53069103360. Its totient is φ = 4209149952.

The previous prime is 15793262629. The next prime is 15793262647. The reversal of 15793262640 is 4626239751.

15793262640 is a `hidden beast` number, since 1 + 579 + 32 + 6 + 2 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (15793262647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1527729 + ... + 1538031.

It is an arithmetic number, because the mean of its divisors is an integer number (442242528).

Almost surely, 2^15793262640 is an apocalyptic number.

15793262640 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 15793262640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26534551680).

15793262640 is an abundant number, since it is smaller than the sum of its proper divisors (37275840720).

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

15793262640 is a wasteful number, since it uses less digits than its factorization.

15793262640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12451 (or 12442 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 15793262640 in words is "fifteen billion, seven hundred ninety-three million, two hundred sixty-two thousand, six hundred forty".