61315449311 has 2 divisors, whose sum is σ = 61315449312. Its totient is φ = 61315449310.

The previous prime is 61315449281. The next prime is 61315449313. The reversal of 61315449311 is 11394451316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61315449311 - 2²² = 61311255007 is a prime.

Together with 61315449313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61315449313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30657724655 + 30657724656.

It is an arithmetic number, because the mean of its divisors is an integer number (30657724656).

Almost surely, 2^61315449311 is an apocalyptic number.

61315449311 is a deficient number, since it is larger than the sum of its proper divisors (1).

61315449311 is an equidigital number, since it uses as much as digits as its factorization.

61315449311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The spelling of 61315449311 in words is "sixty-one billion, three hundred fifteen million, four hundred forty-nine thousand, three hundred eleven".