51510340405 has 8 divisors (see below), whose sum is σ = 61945915392. Its totient is φ = 41119267728.

The previous prime is 51510340363. The next prime is 51510340411. The reversal of 51510340405 is 50404301515.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51510340405 is a prime.

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, 11123029 + ... + 11127658.

It is an arithmetic number, because the mean of its divisors is an integer number (7743239424).

Almost surely, 2^51510340405 is an apocalyptic number.

It is an amenable number.

51510340405 is a deficient number, since it is larger than the sum of its proper divisors (10435574987).

51510340405 is a wasteful number, since it uses less digits than its factorization.

51510340405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22251155.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 51510340405 in words is "fifty-one billion, five hundred ten million, three hundred forty thousand, four hundred five".