11402661645 has 24 divisors (see below), whose sum is σ = 20402184192. Its totient is φ = 5885244000.

The previous prime is 11402661629. The next prime is 11402661671. The reversal of 11402661645 is 54616620411.

11402661645 is a `hidden beast` number, since 1 + 1 + 4 + 0 + 2 + 6 + 6 + 1 + 645 = 666.

It is not a de Polignac number, because 11402661645 - 2⁴ = 11402661629 is a prime.

It is a super-3 number, since 3×11402661645³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4085581 + ... + 4088370.

It is an arithmetic number, because the mean of its divisors is an integer number (850091008).

Almost surely, 2^11402661645 is an apocalyptic number.

11402661645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11402661645 is a deficient number, since it is larger than the sum of its proper divisors (8999522547).

11402661645 is a wasteful number, since it uses less digits than its factorization.

11402661645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8173993 (or 8173990 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 11402661645 in words is "eleven billion, four hundred two million, six hundred sixty-one thousand, six hundred forty-five".