161624304054641 has 4 divisors (see below), whose sum is σ = 161992468756800. Its totient is φ = 161256139352484.

The previous prime is 161624304054611. The next prime is 161624304054671. The reversal of 161624304054641 is 146450403426161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (161624304054611) and next prime (161624304054671).

It is a cyclic number.

It is not a de Polignac number, because 161624304054641 - 2³⁸ = 161349426147697 is a prime.

It is a super-2 number, since 2×161624304054641² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161624304054611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184082350421 + ... + 184082351298.

It is an arithmetic number, because the mean of its divisors is an integer number (40498117189200).

Almost surely, 2^{161624304054641} is an apocalyptic number.

It is an amenable number.

161624304054641 is a deficient number, since it is larger than the sum of its proper divisors (368164702159).

161624304054641 is an equidigital number, since it uses as much as digits as its factorization.

161624304054641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368164702158.

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 161624304054641 in words is "one hundred sixty-one trillion, six hundred twenty-four billion, three hundred four million, fifty-four thousand, six hundred forty-one".