15071640849 has 12 divisors (see below), whose sum is σ = 21929055876. Its totient is φ = 9974418432.

The previous prime is 15071640847. The next prime is 15071640851. The reversal of 15071640849 is 94804617051.

15071640849 is a `hidden beast` number, since 1 + 507 + 1 + 64 + 0 + 84 + 9 = 666.

15071640849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15071640847) and next prime (15071640851).

It can be written as a sum of positive squares in 2 ways, for example, as 5127562449 + 9944078400 = 71607^2 + 99720^2 .

It is not a de Polignac number, because 15071640849 - 2¹ = 15071640847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15071640847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6110544 + ... + 6113009.

It is an arithmetic number, because the mean of its divisors is an integer number (1827421323).

Almost surely, 2^15071640849 is an apocalyptic number.

It is an amenable number.

15071640849 is a deficient number, since it is larger than the sum of its proper divisors (6857415027).

15071640849 is a wasteful number, since it uses less digits than its factorization.

15071640849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12223696 (or 12223693 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 15071640849 in words is "fifteen billion, seventy-one million, six hundred forty thousand, eight hundred forty-nine".