51323543002 has 4 divisors (see below), whose sum is σ = 76985314506. Its totient is φ = 25661771500.

The previous prime is 51323542987. The next prime is 51323543021. The reversal of 51323543002 is 20034532315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 34995559041 + 16327983961 = 187071^2 + 127781^2 .

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 as a sum of consecutive naturals, namely, 12830885749 + ... + 12830885752.

Almost surely, 2^51323543002 is an apocalyptic number.

51323543002 is a deficient number, since it is larger than the sum of its proper divisors (25661771504).

51323543002 is a wasteful number, since it uses less digits than its factorization.

51323543002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25661771503.

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 51323543002 in words is "fifty-one billion, three hundred twenty-three million, five hundred forty-three thousand, two".