191253339020 has 24 divisors (see below), whose sum is σ = 401703472800. Its totient is φ = 76487724032.

The previous prime is 191253339007. The next prime is 191253339023. The reversal of 191253339020 is 20933352191.

191253339020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (191253339023) by changing a digit.

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, 735125 + ... + 960684.

It is an arithmetic number, because the mean of its divisors is an integer number (16737644700).

Almost surely, 2^191253339020 is an apocalyptic number.

191253339020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191253339020 is an abundant number, since it is smaller than the sum of its proper divisors (210450133780).

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

191253339020 is a wasteful number, since it uses less digits than its factorization.

191253339020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701457 (or 1701455 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 38.

The spelling of 191253339020 in words is "one hundred ninety-one billion, two hundred fifty-three million, three hundred thirty-nine thousand, twenty".