191249240364 has 72 divisors (see below), whose sum is σ = 594997646880. Its totient is φ = 50439359232.

The previous prime is 191249240359. The next prime is 191249240407. The reversal of 191249240364 is 463042942191.

191249240364 is a `hidden beast` number, since 1 + 9 + 1 + 2 + 49 + 240 + 364 = 666.

191249240364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 29186169 + ... + 29192720.

Almost surely, 2^191249240364 is an apocalyptic number.

191249240364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

191249240364 is an abundant number, since it is smaller than the sum of its proper divisors (403748406516).

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

191249240364 is a wasteful number, since it uses less digits than its factorization.

191249240364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58378919 (or 58378914 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 191249240364 in words is "one hundred ninety-one billion, two hundred forty-nine million, two hundred forty thousand, three hundred sixty-four".