118640499453 has 24 divisors (see below), whose sum is σ = 207371631168. Its totient is φ = 63806654592.

The previous prime is 118640499451. The next prime is 118640499463. The reversal of 118640499453 is 354994046811.

118640499453 is a `hidden beast` number, since 1 + 186 + 4 + 0 + 4 + 9 + 9 + 453 = 666.

It is not a de Polignac number, because 118640499453 - 2¹ = 118640499451 is a prime.

It is a super-2 number, since 2×118640499453² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 118640499453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118640499451) 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, 55386651 + ... + 55388792.

It is an arithmetic number, because the mean of its divisors is an integer number (8640484632).

Almost surely, 2^118640499453 is an apocalyptic number.

It is an amenable number.

118640499453 is a deficient number, since it is larger than the sum of its proper divisors (88731131715).

118640499453 is a wasteful number, since it uses less digits than its factorization.

118640499453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110775473 (or 110775470 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 118640499453 in words is "one hundred eighteen billion, six hundred forty million, four hundred ninety-nine thousand, four hundred fifty-three".