51643113365 has 8 divisors (see below), whose sum is σ = 64666159488. Its totient is φ = 39518208400.

The previous prime is 51643113331. The next prime is 51643113481. The reversal of 51643113365 is 56331134615.

51643113365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51643113365 - 2¹⁶ = 51643047829 is a prime.

It is a super-2 number, since 2×51643113365² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224535161 + ... + 224535390.

It is an arithmetic number, because the mean of its divisors is an integer number (8083269936).

Almost surely, 2^51643113365 is an apocalyptic number.

It is an amenable number.

51643113365 is a deficient number, since it is larger than the sum of its proper divisors (13023046123).

51643113365 is a wasteful number, since it uses less digits than its factorization.

51643113365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449070579.

The product of its digits is 97200, while the sum is 38.

The spelling of 51643113365 in words is "fifty-one billion, six hundred forty-three million, one hundred thirteen thousand, three hundred sixty-five".