163774477361 has 4 divisors (see below), whose sum is σ = 178663066224. Its totient is φ = 148885888500.

The previous prime is 163774477357. The next prime is 163774477397.

It is a happy number.

163774477361 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163774477361 - 2² = 163774477357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163774477297 and 163774477306.

It is not an unprimeable number, because it can be changed into a prime (163774477351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7444294415 + ... + 7444294436.

It is an arithmetic number, because the mean of its divisors is an integer number (44665766556).

Almost surely, 2^163774477361 is an apocalyptic number.

163774477361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163774477361 is a deficient number, since it is larger than the sum of its proper divisors (14888588863).

163774477361 is a wasteful number, since it uses less digits than its factorization.

163774477361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14888588862.

The product of its digits is 12446784, while the sum is 56.

The spelling of 163774477361 in words is "one hundred sixty-three billion, seven hundred seventy-four million, four hundred seventy-seven thousand, three hundred sixty-one".