61169373961 has 2 divisors, whose sum is σ = 61169373962. Its totient is φ = 61169373960.

The previous prime is 61169373959. The next prime is 61169373989. The reversal of 61169373961 is 16937396116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40821777936 + 20347596025 = 202044^2 + 142645^2 .

It is a cyclic number.

It is not a de Polignac number, because 61169373961 - 2¹ = 61169373959 is a prime.

Together with 61169373959, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 61169373899 and 61169373908.

It is not a weakly prime, because it can be changed into another prime (61169373911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30584686980 + 30584686981.

It is an arithmetic number, because the mean of its divisors is an integer number (30584686981).

Almost surely, 2^61169373961 is an apocalyptic number.

It is an amenable number.

61169373961 is a deficient number, since it is larger than the sum of its proper divisors (1).

61169373961 is an equidigital number, since it uses as much as digits as its factorization.

61169373961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 52.

The spelling of 61169373961 in words is "sixty-one billion, one hundred sixty-nine million, three hundred seventy-three thousand, nine hundred sixty-one".