20486656212 has 48 divisors (see below), whose sum is σ = 52284137472. Its totient is φ = 6191853280.

The previous prime is 20486656193. The next prime is 20486656219. The reversal of 20486656212 is 21265668402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20486656219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152058 + ... + 253169.

It is an arithmetic number, because the mean of its divisors is an integer number (1089252864).

Almost surely, 2^20486656212 is an apocalyptic number.

20486656212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20486656212 is an abundant number, since it is smaller than the sum of its proper divisors (31797481260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20486656212 is a wasteful number, since it uses less digits than its factorization.

20486656212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405628 (or 405626 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 20486656212 in words is "twenty billion, four hundred eighty-six million, six hundred fifty-six thousand, two hundred twelve".