51855006906835 has 16 divisors (see below), whose sum is σ = 70072689687552. Its totient is φ = 36496192543200.

The previous prime is 51855006906811. The next prime is 51855006906853. The reversal of 51855006906835 is 53860960055815.

It is a happy number.

It is not a de Polignac number, because 51855006906835 - 2⁵ = 51855006906803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15206745189 + ... + 15206748598.

It is an arithmetic number, because the mean of its divisors is an integer number (4379543105472).

Almost surely, 2^{51855006906835} is an apocalyptic number.

51855006906835 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51855006906835 is a deficient number, since it is larger than the sum of its proper divisors (18217682780717).

51855006906835 is a wasteful number, since it uses less digits than its factorization.

51855006906835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30413493834.

The product of its (nonzero) digits is 38880000, while the sum is 61.

The spelling of 51855006906835 in words is "fifty-one trillion, eight hundred fifty-five billion, six million, nine hundred six thousand, eight hundred thirty-five".