161552621605610 has 16 divisors (see below), whose sum is σ = 306099704095200. Its totient is φ = 61219940818896.

The previous prime is 161552621605601. The next prime is 161552621605621. The reversal of 161552621605610 is 16506126255161.

161552621605610 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425138477720 + ... + 425138478099.

It is an arithmetic number, because the mean of its divisors is an integer number (19131231505950).

Almost surely, 2^{161552621605610} is an apocalyptic number.

161552621605610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161552621605610 is a deficient number, since it is larger than the sum of its proper divisors (144547082489590).

161552621605610 is a wasteful number, since it uses less digits than its factorization.

161552621605610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850276955845.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 161552621605610 in words is "one hundred sixty-one trillion, five hundred fifty-two billion, six hundred twenty-one million, six hundred five thousand, six hundred ten".