13545603612 has 18 divisors (see below), whose sum is σ = 34240275888. Its totient is φ = 4515201192.

The previous prime is 13545603611. The next prime is 13545603613. The reversal of 13545603612 is 21630654531.

13545603612 is a `hidden beast` number, since 1 + 3 + 5 + 45 + 603 + 6 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (13545603611) and next prime (13545603613).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 376266767 = 13545603612 / (1 + 3 + 5 + 4 + 5 + 6 + 0 + 3 + 6 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13545603611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188133348 + ... + 188133419.

Almost surely, 2^13545603612 is an apocalyptic number.

13545603612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13545603612 is an abundant number, since it is smaller than the sum of its proper divisors (20694672276).

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

13545603612 is a wasteful number, since it uses less digits than its factorization.

13545603612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376266777 (or 376266772 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 13545603612 in words is "thirteen billion, five hundred forty-five million, six hundred three thousand, six hundred twelve".