51423121583 has 2 divisors, whose sum is σ = 51423121584. Its totient is φ = 51423121582.

The previous prime is 51423121487. The next prime is 51423121591. The reversal of 51423121583 is 38512132415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51423121583 - 2³⁴ = 34243252399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51428121583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25711560791 + 25711560792.

It is an arithmetic number, because the mean of its divisors is an integer number (25711560792).

Almost surely, 2^51423121583 is an apocalyptic number.

51423121583 is a deficient number, since it is larger than the sum of its proper divisors (1).

51423121583 is an equidigital number, since it uses as much as digits as its factorization.

51423121583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

Adding to 51423121583 its reverse (38512132415), we get a palindrome (89935253998).

The spelling of 51423121583 in words is "fifty-one billion, four hundred twenty-three million, one hundred twenty-one thousand, five hundred eighty-three".