51605753923 has 2 divisors, whose sum is σ = 51605753924. Its totient is φ = 51605753922.

The previous prime is 51605753897. The next prime is 51605753933. The reversal of 51605753923 is 32935750615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51605753923 - 2⁵ = 51605753891 is a prime.

It is a super-2 number, since 2×51605753923² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51605753933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25802876961 + 25802876962.

It is an arithmetic number, because the mean of its divisors is an integer number (25802876962).

Almost surely, 2^51605753923 is an apocalyptic number.

51605753923 is a deficient number, since it is larger than the sum of its proper divisors (1).

51605753923 is an equidigital number, since it uses as much as digits as its factorization.

51605753923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 850500, while the sum is 46.

The spelling of 51605753923 in words is "fifty-one billion, six hundred five million, seven hundred fifty-three thousand, nine hundred twenty-three".