191263268480 has 64 divisors (see below), whose sum is σ = 473005650600. Its totient is φ = 73867186176.

The previous prime is 191263268411. The next prime is 191263268519. The reversal of 191263268480 is 84862362191.

191263268480 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 118936696384 + 72326572096 = 344872^2 + 268936^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5134007 + ... + 5171126.

Almost surely, 2^191263268480 is an apocalyptic number.

191263268480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191263268480 is an abundant number, since it is smaller than the sum of its proper divisors (281742382120).

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

191263268480 is a wasteful number, since it uses less digits than its factorization.

191263268480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10305181 (or 10305169 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 191263268480 in words is "one hundred ninety-one billion, two hundred sixty-three million, two hundred sixty-eight thousand, four hundred eighty".