197015691285 has 40 divisors (see below), whose sum is σ = 403621570176. Its totient is φ = 90064314720.

The previous prime is 197015691269. The next prime is 197015691371. The reversal of 197015691285 is 582196510791.

It is a happy number.

197015691285 is a `hidden beast` number, since 1 + 9 + 70 + 1 + 569 + 1 + 2 + 8 + 5 = 666.

197015691285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 197015691285 - 2⁴ = 197015691269 is a prime.

It is a super-2 number, since 2×197015691285² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 34744201 + ... + 34749870.

Almost surely, 2^197015691285 is an apocalyptic number.

197015691285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197015691285 is an abundant number, since it is smaller than the sum of its proper divisors (206605878891).

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

197015691285 is an equidigital number, since it uses as much as digits as its factorization.

197015691285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69494095 (or 69494086 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 54.

The spelling of 197015691285 in words is "one hundred ninety-seven billion, fifteen million, six hundred ninety-one thousand, two hundred eighty-five".