51853766091 has 16 divisors (see below), whose sum is σ = 71262643584. Its totient is φ = 33518769984.

The previous prime is 51853766057. The next prime is 51853766113. The reversal of 51853766091 is 19066735815.

It is not a de Polignac number, because 51853766091 - 2¹¹ = 51853764043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51853766011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1449361 + ... + 1484706.

It is an arithmetic number, because the mean of its divisors is an integer number (4453915224).

Almost surely, 2^51853766091 is an apocalyptic number.

51853766091 is a deficient number, since it is larger than the sum of its proper divisors (19408877493).

51853766091 is a wasteful number, since it uses less digits than its factorization.

51853766091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934250.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 51853766091 in words is "fifty-one billion, eight hundred fifty-three million, seven hundred sixty-six thousand, ninety-one".