51612739483 has 4 divisors (see below), whose sum is σ = 54648783000. Its totient is φ = 48576695968.

The previous prime is 51612739459. The next prime is 51612739489. The reversal of 51612739483 is 38493721615.

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

It is not a de Polignac number, because 51612739483 - 2⁹ = 51612738971 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51612739489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1518021733 + ... + 1518021766.

It is an arithmetic number, because the mean of its divisors is an integer number (13662195750).

Almost surely, 2^51612739483 is an apocalyptic number.

51612739483 is a deficient number, since it is larger than the sum of its proper divisors (3036043517).

51612739483 is a wasteful number, since it uses less digits than its factorization.

51612739483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036043516.

The product of its digits is 1088640, while the sum is 49.

The spelling of 51612739483 in words is "fifty-one billion, six hundred twelve million, seven hundred thirty-nine thousand, four hundred eighty-three".