168577742401 has 4 divisors (see below), whose sum is σ = 168579900592. Its totient is φ = 168575584212.

The previous prime is 168577742381. The next prime is 168577742407. The reversal of 168577742401 is 104247775861.

It is a happy number.

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 168577742401 - 2¹⁵ = 168577709633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168577742407) 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, 957351 + ... + 1119676.

It is an arithmetic number, because the mean of its divisors is an integer number (42144975148).

Almost surely, 2^168577742401 is an apocalyptic number.

It is an amenable number.

168577742401 is a deficient number, since it is larger than the sum of its proper divisors (2158191).

168577742401 is an equidigital number, since it uses as much as digits as its factorization.

168577742401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158190.

The product of its (nonzero) digits is 2634240, while the sum is 52.

The spelling of 168577742401 in words is "one hundred sixty-eight billion, five hundred seventy-seven million, seven hundred forty-two thousand, four hundred one".