15793817785648 has 30 divisors (see below), whose sum is σ = 35596525546716. Its totient is φ = 6768779050656.

The previous prime is 15793817785609. The next prime is 15793817785649. The reversal of 15793817785648 is 84658771839751.

It is not an unprimeable number, because it can be changed into a prime (15793817785649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10072587090 + ... + 10072588657.

Almost surely, 2^{15793817785648} is an apocalyptic number.

It is an amenable number.

15793817785648 is an abundant number, since it is smaller than the sum of its proper divisors (19802707761068).

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

15793817785648 is a wasteful number, since it uses less digits than its factorization.

15793817785648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20145175769 (or 20145175756 counting only the distinct ones).

The product of its digits is 2844979200, while the sum is 79.

The spelling of 15793817785648 in words is "fifteen trillion, seven hundred ninety-three billion, eight hundred seventeen million, seven hundred eighty-five thousand, six hundred forty-eight".