1204312451653 has 4 divisors (see below), whose sum is σ = 1243161240448. Its totient is φ = 1165463662860.

The previous prime is 1204312451651. The next prime is 1204312451681. The reversal of 1204312451653 is 3561542134021.

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 1204312451653 - 2¹ = 1204312451651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204312451651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19424394351 + ... + 19424394412.

It is an arithmetic number, because the mean of its divisors is an integer number (310790310112).

Almost surely, 2^{1204312451653} is an apocalyptic number.

It is an amenable number.

1204312451653 is a deficient number, since it is larger than the sum of its proper divisors (38848788795).

1204312451653 is an equidigital number, since it uses as much as digits as its factorization.

1204312451653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38848788794.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 1204312451653 its reverse (3561542134021), we get a palindrome (4765854585674).

The spelling of 1204312451653 in words is "one trillion, two hundred four billion, three hundred twelve million, four hundred fifty-one thousand, six hundred fifty-three".