2090851015051 has 4 divisors (see below), whose sum is σ = 2095144344112. Its totient is φ = 2086557685992.

The previous prime is 2090851015049. The next prime is 2090851015063. The reversal of 2090851015051 is 1505101580902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2090851015051 - 2¹ = 2090851015049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2090851015051.

It is not an unprimeable number, because it can be changed into a prime (2090851015651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2146663800 + ... + 2146664773.

It is an arithmetic number, because the mean of its divisors is an integer number (523786086028).

Almost surely, 2^{2090851015051} is an apocalyptic number.

2090851015051 is a deficient number, since it is larger than the sum of its proper divisors (4293329061).

2090851015051 is an equidigital number, since it uses as much as digits as its factorization.

2090851015051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293329060.

The product of its (nonzero) digits is 18000, while the sum is 37.

Adding to 2090851015051 its reverse (1505101580902), we get a palindrome (3595952595953).

The spelling of 2090851015051 in words is "two trillion, ninety billion, eight hundred fifty-one million, fifteen thousand, fifty-one".