27755280031 has 16 divisors (see below), whose sum is σ = 28809216000. Its totient is φ = 26723746368.

The previous prime is 27755280023. The next prime is 27755280071. The reversal of 27755280031 is 13008255772.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27755280031 - 2³ = 27755280023 is a prime.

It is a super-2 number, since 2×27755280031² (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 (27755280001) 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, 815746 + ... + 849088.

It is an arithmetic number, because the mean of its divisors is an integer number (1800576000).

Almost surely, 2^27755280031 is an apocalyptic number.

27755280031 is a deficient number, since it is larger than the sum of its proper divisors (1053935969).

27755280031 is a wasteful number, since it uses less digits than its factorization.

27755280031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33678.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 27755280031 in words is "twenty-seven billion, seven hundred fifty-five million, two hundred eighty thousand, thirty-one".