51434340415 has 4 divisors (see below), whose sum is σ = 61721208504. Its totient is φ = 41147472328.

The previous prime is 51434340413. The next prime is 51434340427. The reversal of 51434340415 is 51404343415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51434340415 - 2¹ = 51434340413 is a prime.

It is a super-2 number, since 2×51434340415² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51434340413) 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, 5143434037 + ... + 5143434046.

It is an arithmetic number, because the mean of its divisors is an integer number (15430302126).

Almost surely, 2^51434340415 is an apocalyptic number.

51434340415 is a deficient number, since it is larger than the sum of its proper divisors (10286868089).

51434340415 is a wasteful number, since it uses less digits than its factorization.

51434340415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10286868088.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 51434340415 in words is "fifty-one billion, four hundred thirty-four million, three hundred forty thousand, four hundred fifteen".