51432645623 has 8 divisors (see below), whose sum is σ = 52538092992. Its totient is φ = 50327662336.

The previous prime is 51432645601. The next prime is 51432645629. The reversal of 51432645623 is 32654623415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51432645623 is a prime.

It is a super-2 number, since 2×51432645623² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432645629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112811 + ... + 339987.

It is an arithmetic number, because the mean of its divisors is an integer number (6567261624).

Almost surely, 2^51432645623 is an apocalyptic number.

51432645623 is a deficient number, since it is larger than the sum of its proper divisors (1105447369).

51432645623 is a wasteful number, since it uses less digits than its factorization.

51432645623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232041.

The product of its digits is 518400, while the sum is 41.

The spelling of 51432645623 in words is "fifty-one billion, four hundred thirty-two million, six hundred forty-five thousand, six hundred twenty-three".