51132020411 has 4 divisors (see below), whose sum is σ = 53823179400. Its totient is φ = 48440861424.

The previous prime is 51132020273. The next prime is 51132020417. The reversal of 51132020411 is 11402023115.

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 51132020411 - 2¹⁰ = 51132019387 is a prime.

It is a super-2 number, since 2×51132020411² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51132020417) 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, 1345579466 + ... + 1345579503.

It is an arithmetic number, because the mean of its divisors is an integer number (13455794850).

Almost surely, 2^51132020411 is an apocalyptic number.

51132020411 is a deficient number, since it is larger than the sum of its proper divisors (2691158989).

51132020411 is a wasteful number, since it uses less digits than its factorization.

51132020411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691158988.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 51132020411 its reverse (11402023115), we get a palindrome (62534043526).

The spelling of 51132020411 in words is "fifty-one billion, one hundred thirty-two million, twenty thousand, four hundred eleven".