15794781012863 has 4 divisors (see below), whose sum is σ = 15794824601568. Its totient is φ = 15794737424160.

The previous prime is 15794781012833. The next prime is 15794781012893. The reversal of 15794781012863 is 36821018749751.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (15794781012833) and next prime (15794781012893).

It is a cyclic number.

It is not a de Polignac number, because 15794781012863 - 2¹⁴ = 15794780996479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15794781012796 and 15794781012805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15794781012833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21246218 + ... + 21977063.

It is an arithmetic number, because the mean of its divisors is an integer number (3948706150392).

It is a 1-persistent number, because it is pandigital, but 2⋅15794781012863 = 31589562025726 is not.

Almost surely, 2^{15794781012863} is an apocalyptic number.

15794781012863 is a deficient number, since it is larger than the sum of its proper divisors (43588705).

15794781012863 is an equidigital number, since it uses as much as digits as its factorization.

15794781012863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43588704.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 15794781012863 in words is "fifteen trillion, seven hundred ninety-four billion, seven hundred eighty-one million, twelve thousand, eight hundred sixty-three".