161226924100 has 72 divisors (see below), whose sum is σ = 381779377056. Its totient is φ = 58610880000.

The previous prime is 161226924017. The next prime is 161226924101. The reversal of 161226924100 is 1429622161.

It is not an unprimeable number, because it can be changed into a prime (161226924101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4117615 + ... + 4156585.

It is an arithmetic number, because the mean of its divisors is an integer number (5302491348).

Almost surely, 2^161226924100 is an apocalyptic number.

161226924100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161226924100 is an abundant number, since it is smaller than the sum of its proper divisors (220552452956).

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

161226924100 is a wasteful number, since it uses less digits than its factorization.

161226924100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42757 (or 42750 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 161226924100 in words is "one hundred sixty-one billion, two hundred twenty-six million, nine hundred twenty-four thousand, one hundred".