191569017140 has 24 divisors (see below), whose sum is σ = 402685178112. Its totient is φ = 76553275040.

The previous prime is 191569017097. The next prime is 191569017161. The reversal of 191569017140 is 41710965191.

191569017140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×191569017140² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 191569017091 and 191569017100.

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 7 ways as a sum of consecutive naturals, for example, 4624604 + ... + 4665843.

It is an arithmetic number, because the mean of its divisors is an integer number (16778549088).

Almost surely, 2^191569017140 is an apocalyptic number.

191569017140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191569017140 is an abundant number, since it is smaller than the sum of its proper divisors (211116160972).

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

191569017140 is a wasteful number, since it uses less digits than its factorization.

191569017140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9291487 (or 9291485 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 191569017140 in words is "one hundred ninety-one billion, five hundred sixty-nine million, seventeen thousand, one hundred forty".