190985864825061 has 12 divisors (see below), whose sum is σ = 276091485554092. Its totient is φ = 127220980280256.

The previous prime is 190985864824999. The next prime is 190985864825089. The reversal of 190985864825061 is 160528468589091.

190985864825061 is a `hidden beast` number, since 1 + 9 + 0 + 9 + 8 + 5 + 86 + 482 + 5 + 0 + 61 = 666.

190985864825061 is digitally balanced in base 2, 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 2 ways, for example, as 140778082620036 + 50207782205025 = 11864994^2 + 7085745^2 .

It is not a de Polignac number, because 190985864825061 - 2¹⁷ = 190985864693989 is a prime.

It is a super-2 number, since 2×190985864825061² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190985868825061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8577455176 + ... + 8577477441.

Almost surely, 2^{190985864825061} is an apocalyptic number.

It is an amenable number.

190985864825061 is a deficient number, since it is larger than the sum of its proper divisors (85105620729031).

190985864825061 is a wasteful number, since it uses less digits than its factorization.

190985864825061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17154933860 (or 17154933857 counting only the distinct ones).

The product of its (nonzero) digits is 298598400, while the sum is 72.

The spelling of 190985864825061 in words is "one hundred ninety trillion, nine hundred eighty-five billion, eight hundred sixty-four million, eight hundred twenty-five thousand, sixty-one".