11990142900 has 54 divisors (see below), whose sum is σ = 37582439622. Its totient is φ = 3197371200.

The previous prime is 11990142839. The next prime is 11990142971. The reversal of 11990142900 is 924109911.

It can be written as a sum of positive squares in 3 ways, for example, as 2381830416 + 9608312484 = 48804^2 + 98022^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6660291 + ... + 6662090.

Almost surely, 2^11990142900 is an apocalyptic number.

11990142900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11990142900 is an abundant number, since it is smaller than the sum of its proper divisors (25592296722).

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

11990142900 is a wasteful number, since it uses less digits than its factorization.

11990142900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13322401 (or 13322391 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The spelling of 11990142900 in words is "eleven billion, nine hundred ninety million, one hundred forty-two thousand, nine hundred".