119549577661 has 2 divisors, whose sum is σ = 119549577662. Its totient is φ = 119549577660.

The previous prime is 119549577529. The next prime is 119549577689. The reversal of 119549577661 is 166775945911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113970384025 + 5579193636 = 337595^2 + 74694^2 .

It is a cyclic number.

It is not a de Polignac number, because 119549577661 - 2¹⁵ = 119549544893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 119549577661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (119549577761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59774788830 + 59774788831.

It is an arithmetic number, because the mean of its divisors is an integer number (59774788831).

Almost surely, 2^119549577661 is an apocalyptic number.

It is an amenable number.

119549577661 is a deficient number, since it is larger than the sum of its proper divisors (1).

119549577661 is an equidigital number, since it uses as much as digits as its factorization.

119549577661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14288400, while the sum is 61.

The spelling of 119549577661 in words is "one hundred nineteen billion, five hundred forty-nine million, five hundred seventy-seven thousand, six hundred sixty-one".