168420470401 has 4 divisors (see below), whose sum is σ = 168424927492. Its totient is φ = 168416013312.

The previous prime is 168420470353. The next prime is 168420470423. The reversal of 168420470401 is 104074024861.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52040559376 + 116379911025 = 228124^2 + 341145^2 .

It is a cyclic number.

It is not a de Polignac number, because 168420470401 - 2¹³ = 168420462209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168420440401) 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, 2171376 + ... + 2247601.

It is an arithmetic number, because the mean of its divisors is an integer number (42106231873).

Almost surely, 2^168420470401 is an apocalyptic number.

It is an amenable number.

168420470401 is a deficient number, since it is larger than the sum of its proper divisors (4457091).

168420470401 is an equidigital number, since it uses as much as digits as its factorization.

168420470401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457090.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 168420470401 in words is "one hundred sixty-eight billion, four hundred twenty million, four hundred seventy thousand, four hundred one".