51285159213 has 16 divisors (see below), whose sum is σ = 71367229440. Its totient is φ = 32697179504.

The previous prime is 51285159209. The next prime is 51285159221. The reversal of 51285159213 is 31295158215.

It is a cyclic number.

It is not a de Polignac number, because 51285159213 - 2² = 51285159209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51285159253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295828 + ... + 435986.

It is an arithmetic number, because the mean of its divisors is an integer number (4460451840).

Almost surely, 2^51285159213 is an apocalyptic number.

It is an amenable number.

51285159213 is a deficient number, since it is larger than the sum of its proper divisors (20082070227).

51285159213 is a wasteful number, since it uses less digits than its factorization.

51285159213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145488.

The product of its digits is 108000, while the sum is 42.

The spelling of 51285159213 in words is "fifty-one billion, two hundred eighty-five million, one hundred fifty-nine thousand, two hundred thirteen".