1168523564638 has 16 divisors (see below), whose sum is σ = 1815812912160. Its totient is φ = 563310076000.

The previous prime is 1168523564629. The next prime is 1168523564651. The reversal of 1168523564638 is 8364653258611.

It is a happy number.

It is a super-2 number, since 2×1168523564638² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

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, 14329498 + ... + 14410813.

It is an arithmetic number, because the mean of its divisors is an integer number (113488307010).

Almost surely, 2^{1168523564638} is an apocalyptic number.

1168523564638 is a deficient number, since it is larger than the sum of its proper divisors (647289347522).

1168523564638 is a wasteful number, since it uses less digits than its factorization.

1168523564638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28741043.

The product of its digits is 24883200, while the sum is 58.

The spelling of 1168523564638 in words is "one trillion, one hundred sixty-eight billion, five hundred twenty-three million, five hundred sixty-four thousand, six hundred thirty-eight".