11402563644 has 24 divisors (see below), whose sum is σ = 29562202320. Its totient is φ = 3800854512.

The previous prime is 11402563643. The next prime is 11402563649. The reversal of 11402563644 is 44636520411.

11402563644 is a `hidden beast` number, since 1 + 1 + 4 + 0 + 2 + 5 + 6 + 3 + 644 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 11402563599 and 11402563608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402563643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52789539 + ... + 52789754.

It is an arithmetic number, because the mean of its divisors is an integer number (1231758430).

Almost surely, 2^11402563644 is an apocalyptic number.

It is an amenable number.

11402563644 is an abundant number, since it is smaller than the sum of its proper divisors (18159638676).

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

11402563644 is a wasteful number, since it uses less digits than its factorization.

11402563644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105579306 (or 105579298 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 11402563644 in words is "eleven billion, four hundred two million, five hundred sixty-three thousand, six hundred forty-four".