2051533773431 has 4 divisors (see below), whose sum is σ = 2051536701864. Its totient is φ = 2051530845000.

The previous prime is 2051533773349. The next prime is 2051533773439. The reversal of 2051533773431 is 1343773351502.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2051533773431 - 2³⁸ = 1776655866487 is a prime.

It is a super-2 number, since 2×2051533773431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051533773439) 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, 276161 + ... + 2044341.

It is an arithmetic number, because the mean of its divisors is an integer number (512884175466).

Almost surely, 2^{2051533773431} is an apocalyptic number.

2051533773431 is a deficient number, since it is larger than the sum of its proper divisors (2928433).

2051533773431 is a wasteful number, since it uses less digits than its factorization.

2051533773431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928432.

The product of its (nonzero) digits is 793800, while the sum is 44.

The spelling of 2051533773431 in words is "two trillion, fifty-one billion, five hundred thirty-three million, seven hundred seventy-three thousand, four hundred thirty-one".