11653123545 has 96 divisors (see below), whose sum is σ = 23798691072. Its totient is φ = 5163388416.

The previous prime is 11653123507. The next prime is 11653123577. The reversal of 11653123545 is 54532135611.

11653123545 is a `hidden beast` number, since 1 + 1 + 65 + 31 + 23 + 545 = 666.

It is not a de Polignac number, because 11653123545 - 2⁶ = 11653123481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3296599 + ... + 3300131.

It is an arithmetic number, because the mean of its divisors is an integer number (247903032).

Almost surely, 2^11653123545 is an apocalyptic number.

11653123545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11653123545 is an abundant number, since it is smaller than the sum of its proper divisors (12145567527).

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

11653123545 is a wasteful number, since it uses less digits than its factorization.

11653123545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871 (or 3868 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The spelling of 11653123545 in words is "eleven billion, six hundred fifty-three million, one hundred twenty-three thousand, five hundred forty-five".