11866636730 has 32 divisors (see below), whose sum is σ = 23796234000. Its totient is φ = 4230438912.

The previous prime is 11866636711. The next prime is 11866636739. The reversal of 11866636730 is 3763666811.

It can be written as a sum of positive squares in 8 ways, for example, as 2262048721 + 9604588009 = 47561^2 + 98003^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11866636739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1570055 + ... + 1577594.

Almost surely, 2^11866636730 is an apocalyptic number.

11866636730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11866636730 is an abundant number, since it is smaller than the sum of its proper divisors (11929597270).

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

11866636730 is a wasteful number, since it uses less digits than its factorization.

11866636730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147698.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 11866636730 in words is "eleven billion, eight hundred sixty-six million, six hundred thirty-six thousand, seven hundred thirty".