161566012227300 has 36 divisors (see below), whose sum is σ = 467464328711856. Its totient is φ = 43084269927200.

The previous prime is 161566012227251. The next prime is 161566012227343. The reversal of 161566012227300 is 3722210665161.

It is a super-2 number, since 2×161566012227300² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269276686746 + ... + 269276687345.

It is an arithmetic number, because the mean of its divisors is an integer number (12985120241996).

Almost surely, 2^{161566012227300} is an apocalyptic number.

161566012227300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161566012227300 is an abundant number, since it is smaller than the sum of its proper divisors (305898316484556).

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

161566012227300 is a wasteful number, since it uses less digits than its factorization.

161566012227300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538553374108 (or 538553374101 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 161566012227300 in words is "one hundred sixty-one trillion, five hundred sixty-six billion, twelve million, two hundred twenty-seven thousand, three hundred".