15783130591 has 2 divisors, whose sum is σ = 15783130592. Its totient is φ = 15783130590.

The previous prime is 15783130547. The next prime is 15783130619. The reversal of 15783130591 is 19503138751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15783130591 is a prime.

It is a super-2 number, since 2×15783130591² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15783130511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7891565295 + 7891565296.

It is an arithmetic number, because the mean of its divisors is an integer number (7891565296).

Almost surely, 2^15783130591 is an apocalyptic number.

15783130591 is a deficient number, since it is larger than the sum of its proper divisors (1).

15783130591 is an equidigital number, since it uses as much as digits as its factorization.

15783130591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 43.

The spelling of 15783130591 in words is "fifteen billion, seven hundred eighty-three million, one hundred thirty thousand, five hundred ninety-one".