99142487161 has 9 divisors (see below), whose sum is σ = 99499252293. Its totient is φ = 98787000060.

The previous prime is 99142487131. The next prime is 99142487167. The reversal of 99142487161 is 16178424199.

The square root of 99142487161 is 314869.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 99142487161 - 2¹³ = 99142478969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99142487099 and 99142487108.

It is not an unprimeable number, because it can be changed into a prime (99142487167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 157119316 + ... + 157119946.

It is an arithmetic number, because the mean of its divisors is an integer number (11055472477).

Almost surely, 2^99142487161 is an apocalyptic number.

99142487161 is the 314869-th square number.

99142487161 is the 157435-th centered octagonal number.

It is an amenable number.

99142487161 is a deficient number, since it is larger than the sum of its proper divisors (356765132).

99142487161 is an frugal number, since it uses more digits than its factorization.

99142487161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260 (or 1130 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The spelling of 99142487161 in words is "ninety-nine billion, one hundred forty-two million, four hundred eighty-seven thousand, one hundred sixty-one".