27431433672 has 64 divisors (see below), whose sum is σ = 69789660480. Its totient is φ = 8983314432.

The previous prime is 27431433671. The next prime is 27431433677. The reversal of 27431433672 is 27633413472.

It is not an unprimeable number, because it can be changed into a prime (27431433671) 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, 419803 + ... + 480725.

It is an arithmetic number, because the mean of its divisors is an integer number (1090463445).

Almost surely, 2^27431433672 is an apocalyptic number.

It is an amenable number.

27431433672 is an abundant number, since it is smaller than the sum of its proper divisors (42358226808).

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

27431433672 is a wasteful number, since it uses less digits than its factorization.

27431433672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61262 (or 61258 counting only the distinct ones).

The product of its digits is 508032, while the sum is 42.

The spelling of 27431433672 in words is "twenty-seven billion, four hundred thirty-one million, four hundred thirty-three thousand, six hundred seventy-two".