63212820585 has 32 divisors (see below), whose sum is σ = 103532943360. Its totient is φ = 32916639168.

The previous prime is 63212820581. The next prime is 63212820599. The reversal of 63212820585 is 58502821236.

It is a happy number.

It is not a de Polignac number, because 63212820585 - 2² = 63212820581 is a prime.

It is a super-2 number, since 2×63212820585² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63212820581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1767006 + ... + 1802424.

It is an arithmetic number, because the mean of its divisors is an integer number (3235404480).

Almost surely, 2^63212820585 is an apocalyptic number.

It is an amenable number.

63212820585 is a deficient number, since it is larger than the sum of its proper divisors (40320122775).

63212820585 is a wasteful number, since it uses less digits than its factorization.

63212820585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38237.

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 63212820585 in words is "sixty-three billion, two hundred twelve million, eight hundred twenty thousand, five hundred eighty-five".