11515010100 has 72 divisors (see below), whose sum is σ = 36345569568. Its totient is φ = 2791516800.

The previous prime is 11515010081. The next prime is 11515010107. The reversal of 11515010100 is 101051511.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11515010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515010107) 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, 1741399 + ... + 1747998.

Almost surely, 2^11515010100 is an apocalyptic number.

11515010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11515010100 is an abundant number, since it is smaller than the sum of its proper divisors (24830559468).

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

11515010100 is a wasteful number, since it uses less digits than its factorization.

11515010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489425 (or 3489418 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 15.

Adding to 11515010100 its reverse (101051511), we get a palindrome (11616061611).

It can be divided in two parts, 115150 and 10100, that added together give a triangular number (125250 = T₅₀₀).

The spelling of 11515010100 in words is "eleven billion, five hundred fifteen million, ten thousand, one hundred".