161628000647 has 16 divisors (see below), whose sum is σ = 164018560608. Its totient is φ = 159248670720.

The previous prime is 161628000643. The next prime is 161628000649. The reversal of 161628000647 is 746000826161.

It is a cyclic number.

It is not a de Polignac number, because 161628000647 - 2² = 161628000643 is a prime.

It is a super-2 number, since 2×161628000647² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161628000643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92199923 + ... + 92201675.

It is an arithmetic number, because the mean of its divisors is an integer number (10251160038).

Almost surely, 2^161628000647 is an apocalyptic number.

161628000647 is a deficient number, since it is larger than the sum of its proper divisors (2390559961).

161628000647 is a wasteful number, since it uses less digits than its factorization.

With its successor (161628000648) it forms an eRAP, since the sums of their prime factors are consecutive (4210 and 4211).

161628000647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 161628000647 in words is "one hundred sixty-one billion, six hundred twenty-eight million, six hundred forty-seven", and thus it is an aban number.