163577661089 has 2 divisors, whose sum is σ = 163577661090. Its totient is φ = 163577661088.

The previous prime is 163577661053. The next prime is 163577661113. The reversal of 163577661089 is 980166775361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156266043025 + 7311618064 = 395305^2 + 85508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163577661089 is a prime.

It is not a weakly prime, because it can be changed into another prime (163577663089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81788830544 + 81788830545.

It is an arithmetic number, because the mean of its divisors is an integer number (81788830545).

Almost surely, 2^163577661089 is an apocalyptic number.

It is an amenable number.

163577661089 is a deficient number, since it is larger than the sum of its proper divisors (1).

163577661089 is an equidigital number, since it uses as much as digits as its factorization.

163577661089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 163577661089 in words is "one hundred sixty-three billion, five hundred seventy-seven million, six hundred sixty-one thousand, eighty-nine".