161445002646 has 8 divisors (see below), whose sum is σ = 322890005304. Its totient is φ = 53815000880.

The previous prime is 161445002633. The next prime is 161445002659. The reversal of 161445002646 is 646200544161.

It is an interprime number because it is at equal distance from previous prime (161445002633) and next prime (161445002659).

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

161445002646 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13453750215 + ... + 13453750226.

It is an arithmetic number, because the mean of its divisors is an integer number (40361250663).

Almost surely, 2^161445002646 is an apocalyptic number.

161445002646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161445002646 is a wasteful number, since it uses less digits than its factorization.

161445002646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26907500446.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 161445002646 in words is "one hundred sixty-one billion, four hundred forty-five million, two thousand, six hundred forty-six".