27989552575 has 12 divisors (see below), whose sum is σ = 35125204968. Its totient is φ = 22121861600.

The previous prime is 27989552551. The next prime is 27989552579. The reversal of 27989552575 is 57525598972.

It is not a de Polignac number, because 27989552575 - 2⁵ = 27989552543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27989552579) 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, 6742396 + ... + 6746545.

It is an arithmetic number, because the mean of its divisors is an integer number (2927100414).

Almost surely, 2^27989552575 is an apocalyptic number.

27989552575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27989552575 is a deficient number, since it is larger than the sum of its proper divisors (7135652393).

27989552575 is a wasteful number, since it uses less digits than its factorization.

27989552575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13489034 (or 13489029 counting only the distinct ones).

The product of its digits is 79380000, while the sum is 64.

The spelling of 27989552575 in words is "twenty-seven billion, nine hundred eighty-nine million, five hundred fifty-two thousand, five hundred seventy-five".