27731115042 has 32 divisors (see below), whose sum is σ = 58242298752. Its totient is φ = 8785480704.

The previous prime is 27731114989. The next prime is 27731115047. The reversal of 27731115042 is 24051113772.

It is a junction number, because it is equal to n+sod(n) for n = 27731114994 and 27731115012.

It is not an unprimeable number, because it can be changed into a prime (27731115047) 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, 618303 + ... + 661634.

It is an arithmetic number, because the mean of its divisors is an integer number (1820071836).

Almost surely, 2^27731115042 is an apocalyptic number.

27731115042 is an abundant number, since it is smaller than the sum of its proper divisors (30511183710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27731115042 is a wasteful number, since it uses less digits than its factorization.

27731115042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280122.

The product of its (nonzero) digits is 11760, while the sum is 33.

The spelling of 27731115042 in words is "twenty-seven billion, seven hundred thirty-one million, one hundred fifteen thousand, forty-two".