15727841487 has 12 divisors (see below), whose sum is σ = 23090420184. Its totient is φ = 10313338320.

The previous prime is 15727841477. The next prime is 15727841491. The reversal of 15727841487 is 78414872751.

It is a happy number.

15727841487 is a `hidden beast` number, since 1 + 57 + 2 + 78 + 41 + 487 = 666.

It is not a de Polignac number, because 15727841487 - 2⁴ = 15727841471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15727841477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14323533 + ... + 14324630.

It is an arithmetic number, because the mean of its divisors is an integer number (1924201682).

Almost surely, 2^15727841487 is an apocalyptic number.

15727841487 is a deficient number, since it is larger than the sum of its proper divisors (7362578697).

15727841487 is a wasteful number, since it uses less digits than its factorization.

15727841487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28648230 (or 28648227 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 54.

It can be divided in two parts, 157278 and 41487, that added together give a triangular number (198765 = T₆₃₀).

The spelling of 15727841487 in words is "fifteen billion, seven hundred twenty-seven million, eight hundred forty-one thousand, four hundred eighty-seven".