51233821427 has 16 divisors (see below), whose sum is σ = 53465536512. Its totient is φ = 49039772160.

The previous prime is 51233821421. The next prime is 51233821433. The reversal of 51233821427 is 72412833215.

It is an interprime number because it is at equal distance from previous prime (51233821421) and next prime (51233821433).

It is a cyclic number.

It is not a de Polignac number, because 51233821427 - 2¹⁸ = 51233559283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51233821421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2134163 + ... + 2158035.

It is an arithmetic number, because the mean of its divisors is an integer number (3341596032).

Almost surely, 2^51233821427 is an apocalyptic number.

51233821427 is a deficient number, since it is larger than the sum of its proper divisors (2231715085).

51233821427 is a wasteful number, since it uses less digits than its factorization.

51233821427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24658.

The product of its digits is 80640, while the sum is 38.

The spelling of 51233821427 in words is "fifty-one billion, two hundred thirty-three million, eight hundred twenty-one thousand, four hundred twenty-seven".