51323203478 has 8 divisors (see below), whose sum is σ = 76986511560. Its totient is φ = 25661032960.

The previous prime is 51323203403. The next prime is 51323203493. The reversal of 51323203478 is 87430232315.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 160868 + ... + 358503.

It is an arithmetic number, because the mean of its divisors is an integer number (9623313945).

Almost surely, 2^51323203478 is an apocalyptic number.

51323203478 is a deficient number, since it is larger than the sum of its proper divisors (25663308082).

51323203478 is a wasteful number, since it uses less digits than its factorization.

51323203478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568782.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 51323203478 in words is "fifty-one billion, three hundred twenty-three million, two hundred three thousand, four hundred seventy-eight".