163145206426406 has 8 divisors (see below), whose sum is σ = 244725097129344. Its totient is φ = 81570174049960.

The previous prime is 163145206426403. The next prime is 163145206426441. The reversal of 163145206426406 is 604624602541361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163145206426403) 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, 1214497670 + ... + 1214631993.

It is an arithmetic number, because the mean of its divisors is an integer number (30590637141168).

Almost surely, 2^{163145206426406} is an apocalyptic number.

163145206426406 is a deficient number, since it is larger than the sum of its proper divisors (81579890702938).

163145206426406 is a wasteful number, since it uses less digits than its factorization.

163145206426406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429163246.

The product of its (nonzero) digits is 4976640, while the sum is 50.

Adding to 163145206426406 its reverse (604624602541361), we get a palindrome (767769808967767).

The spelling of 163145206426406 in words is "one hundred sixty-three trillion, one hundred forty-five billion, two hundred six million, four hundred twenty-six thousand, four hundred six".