191264247132 has 24 divisors (see below), whose sum is σ = 510037992576. Its totient is φ = 54646927728.

The previous prime is 191264247103. The next prime is 191264247157. The reversal of 191264247132 is 231742462191.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 1138477578 + ... + 1138477745.

It is an arithmetic number, because the mean of its divisors is an integer number (21251583024).

Almost surely, 2^191264247132 is an apocalyptic number.

191264247132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191264247132 is an abundant number, since it is smaller than the sum of its proper divisors (318773745444).

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

191264247132 is a wasteful number, since it uses less digits than its factorization.

191264247132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276955337 (or 2276955335 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The spelling of 191264247132 in words is "one hundred ninety-one billion, two hundred sixty-four million, two hundred forty-seven thousand, one hundred thirty-two".