2051511021133 has 16 divisors (see below), whose sum is σ = 2400035372416. Its totient is φ = 1716881080320.

The previous prime is 2051511021127. The next prime is 2051511021143. The reversal of 2051511021133 is 3311201151502.

It is not a de Polignac number, because 2051511021133 - 2⁹ = 2051511020621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2051511021098 and 2051511021107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051511021143) 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, 533748 + ... + 2094733.

It is an arithmetic number, because the mean of its divisors is an integer number (150002210776).

Almost surely, 2^{2051511021133} is an apocalyptic number.

It is an amenable number.

2051511021133 is a deficient number, since it is larger than the sum of its proper divisors (348524351283).

2051511021133 is a wasteful number, since it uses less digits than its factorization.

2051511021133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631124.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 2051511021133 its reverse (3311201151502), we get a palindrome (5362712172635).

The spelling of 2051511021133 in words is "two trillion, fifty-one billion, five hundred eleven million, twenty-one thousand, one hundred thirty-three".