161036036250 has 40 divisors (see below), whose sum is σ = 402461271168. Its totient is φ = 42942942000.

The previous prime is 161036036233. The next prime is 161036036263. The reversal of 161036036250 is 52630630161.

It is a super-2 number, since 2×161036036250² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21467722 + ... + 21475221.

Almost surely, 2^161036036250 is an apocalyptic number.

161036036250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161036036250 is an abundant number, since it is smaller than the sum of its proper divisors (241425234918).

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

161036036250 is an equidigital number, since it uses as much as digits as its factorization.

161036036250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42942968 (or 42942953 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The spelling of 161036036250 in words is "one hundred sixty-one billion, thirty-six million, thirty-six thousand, two hundred fifty".