7161772086 has 128 divisors (see below), whose sum is σ = 19160064000. Its totient is φ = 1980054720.

The previous prime is 7161772073. The next prime is 7161772147. The reversal of 7161772086 is 6802771617.

7161772086 is a `hidden beast` number, since 7 + 1 + 617 + 7 + 20 + 8 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 567946 + ... + 580418.

It is an arithmetic number, because the mean of its divisors is an integer number (149688000).

Almost surely, 2^7161772086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7161772086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9580032000).

7161772086 is an abundant number, since it is smaller than the sum of its proper divisors (11998291914).

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

7161772086 is a wasteful number, since it uses less digits than its factorization.

7161772086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12536 (or 12516 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 7161772086 is about 84627.2538015975. The cubic root of 7161772086 is about 1927.5552358923. Note that the first 3 decimals are identical.

The spelling of 7161772086 in words is "seven billion, one hundred sixty-one million, seven hundred seventy-two thousand, eighty-six".