1211304057479 has 4 divisors (see below), whose sum is σ = 1229383222584. Its totient is φ = 1193224892376.

The previous prime is 1211304057427. The next prime is 1211304057493. The reversal of 1211304057479 is 9747504031121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1211304057479 - 2¹² = 1211304053383 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 (1211301057479) 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, 9039582452 + ... + 9039582585.

It is an arithmetic number, because the mean of its divisors is an integer number (307345805646).

Almost surely, 2^{1211304057479} is an apocalyptic number.

1211304057479 is a deficient number, since it is larger than the sum of its proper divisors (18079165105).

1211304057479 is an equidigital number, since it uses as much as digits as its factorization.

1211304057479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18079165104.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 1211304057479 in words is "one trillion, two hundred eleven billion, three hundred four million, fifty-seven thousand, four hundred seventy-nine".