51885543777685 has 16 divisors (see below), whose sum is σ = 64665426608640. Its totient is φ = 39923014864320.

The previous prime is 51885543777673. The next prime is 51885543777829. The reversal of 51885543777685 is 58677734558815.

It is not a de Polignac number, because 51885543777685 - 2⁴⁵ = 16701171688853 is a prime.

It is a congruent 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, 1026801250 + ... + 1026851779.

It is an arithmetic number, because the mean of its divisors is an integer number (4041589163040).

Almost surely, 2^{51885543777685} is an apocalyptic number.

It is an amenable number.

51885543777685 is a deficient number, since it is larger than the sum of its proper divisors (12779882830955).

51885543777685 is a wasteful number, since it uses less digits than its factorization.

51885543777685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053653228.

The product of its digits is 7902720000, while the sum is 79.

The spelling of 51885543777685 in words is "fifty-one trillion, eight hundred eighty-five billion, five hundred forty-three million, seven hundred seventy-seven thousand, six hundred eighty-five".