51235315555 has 8 divisors (see below), whose sum is σ = 61709252544. Its totient is φ = 40837003200.

The previous prime is 51235315543. The next prime is 51235315633. The reversal of 51235315555 is 55551353215.

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

It is not a de Polignac number, because 51235315555 - 2⁷ = 51235315427 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, 18904666 + ... + 18907375.

It is an arithmetic number, because the mean of its divisors is an integer number (7713656568).

Almost surely, 2^51235315555 is an apocalyptic number.

51235315555 is a deficient number, since it is larger than the sum of its proper divisors (10473936989).

51235315555 is a wasteful number, since it uses less digits than its factorization.

51235315555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37812317.

The product of its digits is 281250, while the sum is 40.

The spelling of 51235315555 in words is "fifty-one billion, two hundred thirty-five million, three hundred fifteen thousand, five hundred fifty-five".