27383866531 has 24 divisors (see below), whose sum is σ = 32913078624. Its totient is φ = 22704514560.

The previous prime is 27383866483. The next prime is 27383866541. The reversal of 27383866531 is 13566838372.

It is not a de Polignac number, because 27383866531 - 2⁷ = 27383866403 is a prime.

It is a super-2 number, since 2×27383866531² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27383866541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110131 + ... + 258643.

It is an arithmetic number, because the mean of its divisors is an integer number (1371378276).

Almost surely, 2^27383866531 is an apocalyptic number.

27383866531 is a deficient number, since it is larger than the sum of its proper divisors (5529212093).

27383866531 is a wasteful number, since it uses less digits than its factorization.

27383866531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148651 (or 148644 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The spelling of 27383866531 in words is "twenty-seven billion, three hundred eighty-three million, eight hundred sixty-six thousand, five hundred thirty-one".