51430665043 has 4 divisors (see below), whose sum is σ = 52524934560. Its totient is φ = 50336395528.

The previous prime is 51430665037. The next prime is 51430665073. The reversal of 51430665043 is 34056603415.

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

It is a cyclic number.

It is not a de Polignac number, because 51430665043 - 2²⁹ = 50893794131 is a prime.

It is a super-2 number, since 2×51430665043² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51430664993 and 51430665011.

It is not an unprimeable number, because it can be changed into a prime (51430665073) 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, 547134688 + ... + 547134781.

It is an arithmetic number, because the mean of its divisors is an integer number (13131233640).

Almost surely, 2^51430665043 is an apocalyptic number.

51430665043 is a deficient number, since it is larger than the sum of its proper divisors (1094269517).

51430665043 is a wasteful number, since it uses less digits than its factorization.

51430665043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094269516.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 51430665043 in words is "fifty-one billion, four hundred thirty million, six hundred sixty-five thousand, forty-three".