52485205690 has 16 divisors (see below), whose sum is σ = 94477824000. Its totient is φ = 20993092560.

The previous prime is 52485205673. The next prime is 52485205709. The reversal of 52485205690 is 9650258425.

It is a happy number.

It is a super-2 number, since 2×52485205690² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52485205690.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 122311 + ... + 346309.

It is an arithmetic number, because the mean of its divisors is an integer number (5904864000).

Almost surely, 2^52485205690 is an apocalyptic number.

52485205690 is a deficient number, since it is larger than the sum of its proper divisors (41992618310).

52485205690 is a wasteful number, since it uses less digits than its factorization.

52485205690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247437.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 52485205690 in words is "fifty-two billion, four hundred eighty-five million, two hundred five thousand, six hundred ninety".