10635521004 has 72 divisors (see below), whose sum is σ = 27360758880. Its totient is φ = 3482848512.

The previous prime is 10635521003. The next prime is 10635521023. The reversal of 10635521004 is 40012553601.

10635521004 is a `hidden beast` number, since 1 + 0 + 6 + 3 + 552 + 100 + 4 = 666.

It is a super-2 number, since 2×10635521004² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10635521003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492457 + ... + 513599.

It is an arithmetic number, because the mean of its divisors is an integer number (380010540).

Almost surely, 2^10635521004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10635521004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13680379440).

10635521004 is an abundant number, since it is smaller than the sum of its proper divisors (16725237876).

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

10635521004 is a wasteful number, since it uses less digits than its factorization.

10635521004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21399 (or 21394 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 10635521004 in words is "ten billion, six hundred thirty-five million, five hundred twenty-one thousand, four".