52685511291 has 80 divisors (see below), whose sum is σ = 95444490240. Its totient is φ = 28273432320.

The previous prime is 52685511289. The next prime is 52685511317. The reversal of 52685511291 is 19211558625.

52685511291 is a `hidden beast` number, since 5 + 2 + 6 + 8 + 551 + 1 + 2 + 91 = 666.

It is not a de Polignac number, because 52685511291 - 2¹ = 52685511289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52685511691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4611376 + ... + 4622786.

It is an arithmetic number, because the mean of its divisors is an integer number (1193056128).

Almost surely, 2^52685511291 is an apocalyptic number.

52685511291 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

52685511291 is a deficient number, since it is larger than the sum of its proper divisors (42758978949).

52685511291 is a wasteful number, since it uses less digits than its factorization.

52685511291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11926 (or 11917 counting only the distinct ones).

The product of its digits is 216000, while the sum is 45.

The spelling of 52685511291 in words is "fifty-two billion, six hundred eighty-five million, five hundred eleven thousand, two hundred ninety-one".