51612462943 has 4 divisors (see below), whose sum is σ = 51612918280. Its totient is φ = 51612007608.

The previous prime is 51612462931. The next prime is 51612462971. The reversal of 51612462943 is 34926421615.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34926421615 = 5 ⋅6985284323.

It is a cyclic number.

It is not a de Polignac number, because 51612462943 - 2⁹ = 51612462431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51612462943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51612462973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91573 + ... + 334081.

It is an arithmetic number, because the mean of its divisors is an integer number (12903229570).

Almost surely, 2^51612462943 is an apocalyptic number.

51612462943 is a deficient number, since it is larger than the sum of its proper divisors (455337).

51612462943 is a wasteful number, since it uses less digits than its factorization.

51612462943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455336.

The product of its digits is 311040, while the sum is 43.

The spelling of 51612462943 in words is "fifty-one billion, six hundred twelve million, four hundred sixty-two thousand, nine hundred forty-three".