51233146646 has 8 divisors (see below), whose sum is σ = 83836058184. Its totient is φ = 23287793920.

The previous prime is 51233146633. The next prime is 51233146649. The reversal of 51233146646 is 64664133215.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51233146649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164389675 + ... + 1164389718.

It is an arithmetic number, because the mean of its divisors is an integer number (10479507273).

Almost surely, 2^51233146646 is an apocalyptic number.

51233146646 is a deficient number, since it is larger than the sum of its proper divisors (32602911538).

51233146646 is a wasteful number, since it uses less digits than its factorization.

51233146646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328779406.

The product of its digits is 311040, while the sum is 41.

The spelling of 51233146646 in words is "fifty-one billion, two hundred thirty-three million, one hundred forty-six thousand, six hundred forty-six".