1204105853669 has 4 divisors (see below), whose sum is σ = 1224514427520. Its totient is φ = 1183697279820.

The previous prime is 1204105853627. The next prime is 1204105853689. The reversal of 1204105853669 is 9663585014021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1204105853669 - 2²⁸ = 1203837418213 is a prime.

It is a super-2 number, since 2×1204105853669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204105853689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10204286837 + ... + 10204286954.

It is an arithmetic number, because the mean of its divisors is an integer number (306128606880).

Almost surely, 2^{1204105853669} is an apocalyptic number.

It is an amenable number.

1204105853669 is a deficient number, since it is larger than the sum of its proper divisors (20408573851).

1204105853669 is an equidigital number, since it uses as much as digits as its factorization.

1204105853669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20408573850.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 1204105853669 in words is "one trillion, two hundred four billion, one hundred five million, eight hundred fifty-three thousand, six hundred sixty-nine".