84902887161 has 9 divisors (see below), whose sum is σ = 122638766341. Its totient is φ = 56601342012.

The previous prime is 84902887159. The next prime is 84902887229. The reversal of 84902887161 is 16178820948.

The square root of 84902887161 is 291381.

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

84902887161 is a `hidden beast` number, since 8 + 490 + 2 + 88 + 71 + 6 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 84902887161 - 2¹ = 84902887159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84902887098 and 84902887107.

It is not an unprimeable number, because it can be changed into a prime (84902887661) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 825580 + ... + 922706.

Almost surely, 2^84902887161 is an apocalyptic number.

84902887161 is the 291381-st square number.

84902887161 is the 145691-st centered octagonal number.

It is an amenable number.

84902887161 is a deficient number, since it is larger than the sum of its proper divisors (37735879180).

84902887161 is an frugal number, since it uses more digits than its factorization.

84902887161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194260 (or 97130 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 84902887161 in words is "eighty-four billion, nine hundred two million, eight hundred eighty-seven thousand, one hundred sixty-one".