11561252100 has 36 divisors (see below), whose sum is σ = 33450556944. Its totient is φ = 3083000480.

The previous prime is 11561252099. The next prime is 11561252113. The reversal of 11561252100 is 125216511.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19268454 + ... + 19269053.

Almost surely, 2^11561252100 is an apocalyptic number.

11561252100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11561252100 is an abundant number, since it is smaller than the sum of its proper divisors (21889304844).

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

11561252100 is a wasteful number, since it uses less digits than its factorization.

11561252100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38537524 (or 38537517 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 11561252100 its reverse (125216511), we get a palindrome (11686468611).

The spelling of 11561252100 in words is "eleven billion, five hundred sixty-one million, two hundred fifty-two thousand, one hundred".