161731547070 has 16 divisors (see below), whose sum is σ = 388155713040. Its totient is φ = 43128412544.

The previous prime is 161731547063. The next prime is 161731547101. The reversal of 161731547070 is 70745137161.

It is a happy number.

161731547070 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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, 2695525755 + ... + 2695525814.

It is an arithmetic number, because the mean of its divisors is an integer number (24259732065).

Almost surely, 2^161731547070 is an apocalyptic number.

161731547070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161731547070 is an abundant number, since it is smaller than the sum of its proper divisors (226424165970).

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

161731547070 is a wasteful number, since it uses less digits than its factorization.

161731547070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391051579.

The product of its (nonzero) digits is 123480, while the sum is 42.

The spelling of 161731547070 in words is "one hundred sixty-one billion, seven hundred thirty-one million, five hundred forty-seven thousand, seventy".