51430326505 has 8 divisors (see below), whose sum is σ = 61988271552. Its totient is φ = 40963008048.

The previous prime is 51430326481. The next prime is 51430326517. The reversal of 51430326505 is 50562303415.

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

It is a cyclic number.

It is not a de Polignac number, because 51430326505 - 2²¹ = 51428229353 is a prime.

It is a Duffinian 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, 22655397 + ... + 22657666.

It is an arithmetic number, because the mean of its divisors is an integer number (7748533944).

Almost surely, 2^51430326505 is an apocalyptic number.

It is an amenable number.

51430326505 is a deficient number, since it is larger than the sum of its proper divisors (10557945047).

51430326505 is a wasteful number, since it uses less digits than its factorization.

51430326505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45313295.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 51430326505 in words is "fifty-one billion, four hundred thirty million, three hundred twenty-six thousand, five hundred five".