161726048472 has 32 divisors (see below), whose sum is σ = 425594865600. Its totient is φ = 51071383584.

The previous prime is 161726048461. The next prime is 161726048503. The reversal of 161726048472 is 274840627161.

It is a congruent 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, 177330738 + ... + 177331649.

It is an arithmetic number, because the mean of its divisors is an integer number (13299839550).

Almost surely, 2^161726048472 is an apocalyptic number.

161726048472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161726048472 is an abundant number, since it is smaller than the sum of its proper divisors (263868817128).

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

161726048472 is a wasteful number, since it uses less digits than its factorization.

161726048472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354662415 (or 354662411 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 161726048472 in words is "one hundred sixty-one billion, seven hundred twenty-six million, forty-eight thousand, four hundred seventy-two".