51513507434 has 8 divisors (see below), whose sum is σ = 77271244068. Its totient is φ = 25756426080.

The previous prime is 51513507433. The next prime is 51513507499. The reversal of 51513507434 is 43470531515.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41329670209 + 10183837225 = 203297^2 + 100915^2 .

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

It is a super-3 number, since 3×51513507434³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51513507433) 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, 163574 + ... + 360254.

Almost surely, 2^51513507434 is an apocalyptic number.

51513507434 is a deficient number, since it is larger than the sum of its proper divisors (25757736634).

51513507434 is a wasteful number, since it uses less digits than its factorization.

51513507434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327640.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 51513507434 in words is "fifty-one billion, five hundred thirteen million, five hundred seven thousand, four hundred thirty-four".