3653123307912 has 960 divisors, whose sum is σ = 11890472140800. Its totient is φ = 1045460183040.

The previous prime is 3653123307817. The next prime is 3653123307917. The reversal of 3653123307912 is 2197033213563.

3653123307912 is a `hidden beast` number, since 3 + 6 + 531 + 2 + 3 + 30 + 79 + 12 = 666.

It is not an unprimeable number, because it can be changed into a prime (3653123307917) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 15952503414 + ... + 15952503642.

It is an arithmetic number, because the mean of its divisors is an integer number (12385908480).

Almost surely, 2^{3653123307912} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3653123307912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5945236070400).

3653123307912 is an abundant number, since it is smaller than the sum of its proper divisors (8237348832888).

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

3653123307912 is a wasteful number, since it uses less digits than its factorization.

3653123307912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The spelling of 3653123307912 in words is "three trillion, six hundred fifty-three billion, one hundred twenty-three million, three hundred seven thousand, nine hundred twelve".