27245205631 has 16 divisors (see below), whose sum is σ = 32147795968. Its totient is φ = 22595500800.

The previous prime is 27245205623. The next prime is 27245205643. The reversal of 27245205631 is 13650254272.

It is a cyclic number.

It is not a de Polignac number, because 27245205631 - 2³ = 27245205623 is a prime.

It is a super-2 number, since 2×27245205631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27245205671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1805086 + ... + 1820116.

It is an arithmetic number, because the mean of its divisors is an integer number (2009237248).

Almost surely, 2^27245205631 is an apocalyptic number.

27245205631 is a deficient number, since it is larger than the sum of its proper divisors (4902590337).

27245205631 is a wasteful number, since it uses less digits than its factorization.

27245205631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23422.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 27245205631 in words is "twenty-seven billion, two hundred forty-five million, two hundred five thousand, six hundred thirty-one".