161711153120 has 48 divisors (see below), whose sum is σ = 416773749168. Its totient is φ = 58804055040.

The previous prime is 161711153083. The next prime is 161711153129. The reversal of 161711153120 is 21351117161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161711153129) 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, 45938909 + ... + 45942428.

It is an arithmetic number, because the mean of its divisors is an integer number (8682786441).

Almost surely, 2^161711153120 is an apocalyptic number.

161711153120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161711153120 is an abundant number, since it is smaller than the sum of its proper divisors (255062596048).

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

161711153120 is a wasteful number, since it uses less digits than its factorization.

161711153120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91881363 (or 91881355 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 29.

The spelling of 161711153120 in words is "one hundred sixty-one billion, seven hundred eleven million, one hundred fifty-three thousand, one hundred twenty".