191025828464 has 10 divisors (see below), whose sum is σ = 370112542680. Its totient is φ = 95512914224.

The previous prime is 191025828431. The next prime is 191025828467. The reversal of 191025828464 is 464828520191.

191025828464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191025828467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5969557124 + ... + 5969557155.

It is an arithmetic number, because the mean of its divisors is an integer number (37011254268).

Almost surely, 2^191025828464 is an apocalyptic number.

It is an amenable number.

191025828464 is a deficient number, since it is larger than the sum of its proper divisors (179086714216).

191025828464 is a wasteful number, since it uses less digits than its factorization.

191025828464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11939114287 (or 11939114281 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 191025828464 in words is "one hundred ninety-one billion, twenty-five million, eight hundred twenty-eight thousand, four hundred sixty-four".