61316555561323 has 2 divisors, whose sum is σ = 61316555561324. Its totient is φ = 61316555561322.

The previous prime is 61316555561269. The next prime is 61316555561341. The reversal of 61316555561323 is 32316555561316.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61316555561323 is a prime.

It is a super-2 number, since 2×61316555561323² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61316555562323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30658277780661 + 30658277780662.

It is an arithmetic number, because the mean of its divisors is an integer number (30658277780662).

Almost surely, 2^{61316555561323} is an apocalyptic number.

61316555561323 is a deficient number, since it is larger than the sum of its proper divisors (1).

61316555561323 is an equidigital number, since it uses as much as digits as its factorization.

61316555561323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7290000, while the sum is 52.

The spelling of 61316555561323 in words is "sixty-one trillion, three hundred sixteen billion, five hundred fifty-five million, five hundred sixty-one thousand, three hundred twenty-three".