51006147643 has 8 divisors (see below), whose sum is σ = 56586173760. Its totient is φ = 45583305480.

The previous prime is 51006147637. The next prime is 51006147649. The reversal of 51006147643 is 34674160015.

It is an interprime number because it is at equal distance from previous prime (51006147637) and next prime (51006147649).

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

It is a cyclic number.

It is not a de Polignac number, because 51006147643 - 2⁵ = 51006147611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51006147649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39295305 + ... + 39296602.

It is an arithmetic number, because the mean of its divisors is an integer number (7073271720).

Almost surely, 2^51006147643 is an apocalyptic number.

51006147643 is a deficient number, since it is larger than the sum of its proper divisors (5580026117).

51006147643 is a wasteful number, since it uses less digits than its factorization.

51006147643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78591977.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 51006147643 in words is "fifty-one billion, six million, one hundred forty-seven thousand, six hundred forty-three".