51405304707443 has 8 divisors (see below), whose sum is σ = 54429719675040. Its totient is φ = 48380953463680.

The previous prime is 51405304707401. The next prime is 51405304707469. The reversal of 51405304707443 is 34470740350415.

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

It is not a de Polignac number, because 51405304707443 - 2¹⁰ = 51405304706419 is a prime.

It is a super-2 number, since 2×51405304707443² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51405304707343) 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, 14265143 + ... + 17501568.

It is an arithmetic number, because the mean of its divisors is an integer number (6803714959380).

Almost surely, 2^{51405304707443} is an apocalyptic number.

51405304707443 is a deficient number, since it is larger than the sum of its proper divisors (3024414967597).

51405304707443 is a wasteful number, since it uses less digits than its factorization.

51405304707443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31861917.

The product of its (nonzero) digits is 2822400, while the sum is 47.

The spelling of 51405304707443 in words is "fifty-one trillion, four hundred five billion, three hundred four million, seven hundred seven thousand, four hundred forty-three".