10635633220 has 12 divisors (see below), whose sum is σ = 22334829804. Its totient is φ = 4254253280.

The previous prime is 10635633181. The next prime is 10635633241. The reversal of 10635633220 is 2233653601.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1305232384 + 9330400836 = 36128^2 + 96594^2 .

It is a super-2 number, since 2×10635633220² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265890811 + ... + 265890850.

It is an arithmetic number, because the mean of its divisors is an integer number (1861235817).

Almost surely, 2^10635633220 is an apocalyptic number.

10635633220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10635633220 is an abundant number, since it is smaller than the sum of its proper divisors (11699196584).

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

10635633220 is a wasteful number, since it uses less digits than its factorization.

10635633220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531781670 (or 531781668 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The spelling of 10635633220 in words is "ten billion, six hundred thirty-five million, six hundred thirty-three thousand, two hundred twenty".