161156015170 has 16 divisors (see below), whose sum is σ = 290093331960. Its totient is φ = 64459627264.

The previous prime is 161156015113. The next prime is 161156015177. The reversal of 161156015170 is 71510651161.

It is a happy number.

161156015170 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 160979895729 + 176119441 = 401223^2 + 13271^2 .

It is a super-3 number, since 3×161156015170³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (161156015177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95047 + ... + 575626.

Almost surely, 2^161156015170 is an apocalyptic number.

161156015170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161156015170 is a deficient number, since it is larger than the sum of its proper divisors (128937316790).

161156015170 is a wasteful number, since it uses less digits than its factorization.

161156015170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694709.

The product of its (nonzero) digits is 6300, while the sum is 34.

The spelling of 161156015170 in words is "one hundred sixty-one billion, one hundred fifty-six million, fifteen thousand, one hundred seventy".