161630224354434 has 32 divisors (see below), whose sum is σ = 356139324244800. Its totient is φ = 48493916696000.

The previous prime is 161630224354393. The next prime is 161630224354453. The reversal of 161630224354434 is 434453422036161.

It is a super-2 number, since 2×161630224354434² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12123472509 + ... + 12123485840.

It is an arithmetic number, because the mean of its divisors is an integer number (11129353882650).

Almost surely, 2^{161630224354434} is an apocalyptic number.

161630224354434 is an abundant number, since it is smaller than the sum of its proper divisors (194509099890366).

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

161630224354434 is a wasteful number, since it uses less digits than its factorization.

161630224354434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24246958466.

The product of its (nonzero) digits is 4976640, while the sum is 48.

The spelling of 161630224354434 in words is "one hundred sixty-one trillion, six hundred thirty billion, two hundred twenty-four million, three hundred fifty-four thousand, four hundred thirty-four".