51500344405 has 16 divisors (see below), whose sum is σ = 64186214400. Its totient is φ = 39621064000.

The previous prime is 51500344403. The next prime is 51500344411. The reversal of 51500344405 is 50444300515.

It is a happy number.

It is not a de Polignac number, because 51500344405 - 2¹ = 51500344403 is a prime.

It is a super-2 number, since 2×51500344405² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500344403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671125 + ... + 743914.

It is an arithmetic number, because the mean of its divisors is an integer number (4011638400).

Almost surely, 2^51500344405 is an apocalyptic number.

It is an amenable number.

51500344405 is a deficient number, since it is larger than the sum of its proper divisors (12685869995).

51500344405 is a wasteful number, since it uses less digits than its factorization.

51500344405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415324.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 51500344405 in words is "fifty-one billion, five hundred million, three hundred forty-four thousand, four hundred five".