51541343011 has 4 divisors (see below), whose sum is σ = 53782270992. Its totient is φ = 49300415032.

The previous prime is 51541343003. The next prime is 51541343017. The reversal of 51541343011 is 11034314515.

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 51541343011 - 2³ = 51541343003 is a prime.

It is a super-2 number, since 2×51541343011² (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 (51541343017) 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, 1120463956 + ... + 1120464001.

It is an arithmetic number, because the mean of its divisors is an integer number (13445567748).

Almost surely, 2^51541343011 is an apocalyptic number.

51541343011 is a deficient number, since it is larger than the sum of its proper divisors (2240927981).

51541343011 is a wasteful number, since it uses less digits than its factorization.

51541343011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240927980.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 51541343011 its reverse (11034314515), we get a palindrome (62575657526).

The spelling of 51541343011 in words is "fifty-one billion, five hundred forty-one million, three hundred forty-three thousand, eleven".