161200245402 has 24 divisors (see below), whose sum is σ = 399162512736. Its totient is φ = 46057212936.

The previous prime is 161200245389. The next prime is 161200245403. The reversal of 161200245402 is 204542002161.

161200245402 is a `hidden beast` number, since 1 + 6 + 1 + 200 + 2 + 454 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (161200245403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 639683388 + ... + 639683639.

It is an arithmetic number, because the mean of its divisors is an integer number (16631771364).

Almost surely, 2^161200245402 is an apocalyptic number.

161200245402 is an abundant number, since it is smaller than the sum of its proper divisors (237962267334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161200245402 is a wasteful number, since it uses less digits than its factorization.

161200245402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279367042 (or 1279367039 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 161200245402 its reverse (204542002161), we get a palindrome (365742247563).

The spelling of 161200245402 in words is "one hundred sixty-one billion, two hundred million, two hundred forty-five thousand, four hundred two".