15381912775 has 6 divisors (see below), whose sum is σ = 19073571872. Its totient is φ = 12305530200.

The previous prime is 15381912713. The next prime is 15381912781. The reversal of 15381912775 is 57721918351.

It is not a de Polignac number, because 15381912775 - 2¹¹ = 15381910727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307638231 + ... + 307638280.

Almost surely, 2^15381912775 is an apocalyptic number.

15381912775 is a deficient number, since it is larger than the sum of its proper divisors (3691659097).

15381912775 is an equidigital number, since it uses as much as digits as its factorization.

15381912775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615276521 (or 615276516 counting only the distinct ones).

The product of its digits is 529200, while the sum is 49.

The spelling of 15381912775 in words is "fifteen billion, three hundred eighty-one million, nine hundred twelve thousand, seven hundred seventy-five".