61196212169 has 2 divisors, whose sum is σ = 61196212170. Its totient is φ = 61196212168.

The previous prime is 61196212153. The next prime is 61196212223. The reversal of 61196212169 is 96121269116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46834586569 + 14361625600 = 216413^2 + 119840^2 .

It is a cyclic number.

It is not a de Polignac number, because 61196212169 - 2⁴ = 61196212153 is a prime.

It is a super-2 number, since 2×61196212169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61196212069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30598106084 + 30598106085.

It is an arithmetic number, because the mean of its divisors is an integer number (30598106085).

Almost surely, 2^61196212169 is an apocalyptic number.

It is an amenable number.

61196212169 is a deficient number, since it is larger than the sum of its proper divisors (1).

61196212169 is an equidigital number, since it uses as much as digits as its factorization.

61196212169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 44.

The spelling of 61196212169 in words is "sixty-one billion, one hundred ninety-six million, two hundred twelve thousand, one hundred sixty-nine".