15389748542529 has 27 divisors (see below), whose sum is σ = 22310763840547. Its totient is φ = 10222524850416.

The previous prime is 15389748542507. The next prime is 15389748542579. The reversal of 15389748542529 is 92524584798351.

It is a happy number.

The square root of 15389748542529 is 3922977.

It is a perfect power (a square), and thus also a powerful number.

15389748542529 is a `hidden beast` number, since 1 + 5 + 3 + 8 + 9 + 7 + 48 + 54 + 2 + 529 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14560825698225 + 828922844304 = 3815865^2 + 910452^2 .

It is not a de Polignac number, because 15389748542529 - 2¹⁵ = 15389748509761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15389748542579) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3448294552 + ... + 3448299014.

Almost surely, 2^{15389748542529} is an apocalyptic number.

15389748542529 is the 3922977-th square number.

15389748542529 is the 1961489-th centered octagonal number.

It is an amenable number.

15389748542529 is a deficient number, since it is larger than the sum of its proper divisors (6921015298018).

15389748542529 is an frugal number, since it uses more digits than its factorization.

15389748542529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9518 (or 4759 counting only the distinct ones).

The product of its digits is 870912000, while the sum is 72.

The spelling of 15389748542529 in words is "fifteen trillion, three hundred eighty-nine billion, seven hundred forty-eight million, five hundred forty-two thousand, five hundred twenty-nine".