1305604142461 has 4 divisors (see below), whose sum is σ = 1309856924992. Its totient is φ = 1301351359932.

The previous prime is 1305604142449. The next prime is 1305604142497. The reversal of 1305604142461 is 1642414065031.

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 1305604142461 - 2²⁹ = 1305067271549 is a prime.

It is a super-2 number, since 2×1305604142461² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305604142461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305607142461) 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, 2126390805 + ... + 2126391418.

It is an arithmetic number, because the mean of its divisors is an integer number (327464231248).

Almost surely, 2^{1305604142461} is an apocalyptic number.

It is an amenable number.

1305604142461 is a deficient number, since it is larger than the sum of its proper divisors (4252782531).

1305604142461 is an equidigital number, since it uses as much as digits as its factorization.

1305604142461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252782530.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 1305604142461 in words is "one trillion, three hundred five billion, six hundred four million, one hundred forty-two thousand, four hundred sixty-one".