20081051291 has 16 divisors (see below), whose sum is σ = 23240093184. Its totient is φ = 16994837184.

The previous prime is 20081051281. The next prime is 20081051323. The reversal of 20081051291 is 19215018002.

It is a cyclic number.

It is not a de Polignac number, because 20081051291 - 2¹⁴ = 20081034907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20081051231) 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, 1063751 + ... + 1082463.

It is an arithmetic number, because the mean of its divisors is an integer number (1452505824).

Almost surely, 2^20081051291 is an apocalyptic number.

20081051291 is a deficient number, since it is larger than the sum of its proper divisors (3159041893).

20081051291 is a wasteful number, since it uses less digits than its factorization.

20081051291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20650.

The product of its (nonzero) digits is 1440, while the sum is 29.

Adding to 20081051291 its reverse (19215018002), we get a palindrome (39296069293).

The spelling of 20081051291 in words is "twenty billion, eighty-one million, fifty-one thousand, two hundred ninety-one".