51810233642 has 8 divisors (see below), whose sum is σ = 81094278816. Its totient is φ = 24778807372.

The previous prime is 51810233621. The next prime is 51810233647. The reversal of 51810233642 is 24633201815.

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

It is not an unprimeable number, because it can be changed into a prime (51810233647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563154668 + ... + 563154759.

It is an arithmetic number, because the mean of its divisors is an integer number (10136784852).

Almost surely, 2^51810233642 is an apocalyptic number.

51810233642 is a deficient number, since it is larger than the sum of its proper divisors (29284045174).

51810233642 is a wasteful number, since it uses less digits than its factorization.

51810233642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126309452.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 51810233642 in words is "fifty-one billion, eight hundred ten million, two hundred thirty-three thousand, six hundred forty-two".