400103562161 has 4 divisors (see below), whose sum is σ = 421161644400. Its totient is φ = 379045479924.

The previous prime is 400103562139. The next prime is 400103562163. The reversal of 400103562161 is 161265301004.

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 a de Polignac number, because none of the positive numbers 2^k-400103562161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400103562163) 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, 10529041091 + ... + 10529041128.

It is an arithmetic number, because the mean of its divisors is an integer number (105290411100).

Almost surely, 2^400103562161 is an apocalyptic number.

It is an amenable number.

400103562161 is a deficient number, since it is larger than the sum of its proper divisors (21058082239).

400103562161 is a wasteful number, since it uses less digits than its factorization.

400103562161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21058082238.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 400103562161 its reverse (161265301004), we get a palindrome (561368863165).

The spelling of 400103562161 in words is "four hundred billion, one hundred three million, five hundred sixty-two thousand, one hundred sixty-one".