27431890490121 has 16 divisors (see below), whose sum is σ = 39390144486336. Its totient is φ = 16880836262976.

The previous prime is 27431890490107. The next prime is 27431890490131. The reversal of 27431890490121 is 12109409813472.

It is not a de Polignac number, because 27431890490121 - 2¹¹ = 27431890488073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27431890490131) 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, 4768690 + ... + 8809323.

It is an arithmetic number, because the mean of its divisors is an integer number (2461884030396).

Almost surely, 2^{27431890490121} is an apocalyptic number.

It is an amenable number.

27431890490121 is a deficient number, since it is larger than the sum of its proper divisors (11958253996215).

27431890490121 is a wasteful number, since it uses less digits than its factorization.

27431890490121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13629832.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 27431890490121 in words is "twenty-seven trillion, four hundred thirty-one billion, eight hundred ninety million, four hundred ninety thousand, one hundred twenty-one".