11361899520 has 132 divisors (see below), whose sum is σ = 39368845620. Its totient is φ = 3029827584.

The previous prime is 11361899519. The next prime is 11361899533. The reversal of 11361899520 is 2599816311.

11361899520 is a `hidden beast` number, since 1 + 1 + 3 + 618 + 9 + 9 + 5 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4951655424 + 6410244096 = 70368^2 + 80064^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 77205 + ... + 169364.

Almost surely, 2^11361899520 is an apocalyptic number.

11361899520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11361899520 is an abundant number, since it is smaller than the sum of its proper divisors (28006946100).

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

11361899520 is a wasteful number, since it uses less digits than its factorization.

11361899520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246600 (or 246579 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 11361899520 in words is "eleven billion, three hundred sixty-one million, eight hundred ninety-nine thousand, five hundred twenty".