20635648219068 has 48 divisors (see below), whose sum is σ = 51920244579840. Its totient is φ = 6357580963200.

The previous prime is 20635648219037. The next prime is 20635648219097. The reversal of 20635648219068 is 86091284653602.

It is a happy number.

It is a super-2 number, since 2×20635648219068² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1103737348 + ... + 1103756043.

It is an arithmetic number, because the mean of its divisors is an integer number (1081671762080).

Almost surely, 2^{20635648219068} is an apocalyptic number.

It is an amenable number.

20635648219068 is an abundant number, since it is smaller than the sum of its proper divisors (31284596360772).

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

20635648219068 is a wasteful number, since it uses less digits than its factorization.

20635648219068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207493458 (or 2207493456 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 60.

The spelling of 20635648219068 in words is "twenty trillion, six hundred thirty-five billion, six hundred forty-eight million, two hundred nineteen thousand, sixty-eight".