1623361642161 has 8 divisors (see below), whose sum is σ = 2473693930944. Its totient is φ = 927635224080.

The previous prime is 1623361642099. The next prime is 1623361642181. The reversal of 1623361642161 is 1612461633261.

It is a happy number.

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

It is not a de Polignac number, because 1623361642161 - 2⁷ = 1623361642033 is a prime.

It is a super-2 number, since 2×1623361642161² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1623361642181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38651467650 + ... + 38651467691.

It is an arithmetic number, because the mean of its divisors is an integer number (309211741368).

Almost surely, 2^{1623361642161} is an apocalyptic number.

It is an amenable number.

1623361642161 is a deficient number, since it is larger than the sum of its proper divisors (850332288783).

1623361642161 is an equidigital number, since it uses as much as digits as its factorization.

1623361642161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77302935351.

The product of its digits is 186624, while the sum is 42.

The spelling of 1623361642161 in words is "one trillion, six hundred twenty-three billion, three hundred sixty-one million, six hundred forty-two thousand, one hundred sixty-one".