61340404313 has 2 divisors, whose sum is σ = 61340404314. Its totient is φ = 61340404312.

The previous prime is 61340404273. The next prime is 61340404319. The reversal of 61340404313 is 31340404316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45151150144 + 16189254169 = 212488^2 + 127237^2 .

It is a cyclic number.

It is not a de Polignac number, because 61340404313 - 2⁸ = 61340404057 is a prime.

It is not a weakly prime, because it can be changed into another prime (61340404319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30670202156 + 30670202157.

It is an arithmetic number, because the mean of its divisors is an integer number (30670202157).

Almost surely, 2^61340404313 is an apocalyptic number.

It is an amenable number.

61340404313 is a deficient number, since it is larger than the sum of its proper divisors (1).

61340404313 is an equidigital number, since it uses as much as digits as its factorization.

61340404313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 61340404313 its reverse (31340404316), we get a palindrome (92680808629).

The spelling of 61340404313 in words is "sixty-one billion, three hundred forty million, four hundred four thousand, three hundred thirteen".