11368266640 has 40 divisors (see below), whose sum is σ = 26793305208. Its totient is φ = 4485012480.

The previous prime is 11368266629. The next prime is 11368266653. The reversal of 11368266640 is 4666286311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 438818704 + 10929447936 = 20948^2 + 104544^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 967471 + ... + 979150.

Almost surely, 2^11368266640 is an apocalyptic number.

11368266640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11368266640 is an abundant number, since it is smaller than the sum of its proper divisors (15425038568).

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

11368266640 is a wasteful number, since it uses less digits than its factorization.

11368266640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946707 (or 1946701 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 11368266640 in words is "eleven billion, three hundred sixty-eight million, two hundred sixty-six thousand, six hundred forty".