11634478218783 has 24 divisors (see below), whose sum is σ = 19825675124736. Its totient is φ = 6433812838800.

The previous prime is 11634478218761. The next prime is 11634478218787. The reversal of 11634478218783 is 38781287443611.

It is a happy number.

11634478218783 is a `hidden beast` number, since 1 + 1 + 6 + 3 + 4 + 478 + 2 + 1 + 87 + 83 = 666.

It is not a de Polignac number, because 11634478218783 - 2²⁰ = 11634477170207 is a prime.

It is a super-2 number, since 2×11634478218783² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 11634478218783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11634478218787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2978615103 + ... + 2978619008.

It is an arithmetic number, because the mean of its divisors is an integer number (826069796864).

Almost surely, 2^{11634478218783} is an apocalyptic number.

11634478218783 is a deficient number, since it is larger than the sum of its proper divisors (8191196905953).

11634478218783 is a wasteful number, since it uses less digits than its factorization.

11634478218783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5957234155 (or 5957234152 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The spelling of 11634478218783 in words is "eleven trillion, six hundred thirty-four billion, four hundred seventy-eight million, two hundred eighteen thousand, seven hundred eighty-three".