161245434324 has 36 divisors (see below), whose sum is σ = 407407108416. Its totient is φ = 49613979168.

The previous prime is 161245434319. The next prime is 161245434359. The reversal of 161245434324 is 423434542161.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39752764 + ... + 39756819.

Almost surely, 2^161245434324 is an apocalyptic number.

It is an amenable number.

161245434324 is an abundant number, since it is smaller than the sum of its proper divisors (246161674092).

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

161245434324 is a wasteful number, since it uses less digits than its factorization.

161245434324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79509616 (or 79509601 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

Adding to 161245434324 its reverse (423434542161), we get a palindrome (584679976485).

The spelling of 161245434324 in words is "one hundred sixty-one billion, two hundred forty-five million, four hundred thirty-four thousand, three hundred twenty-four".