191012291453 has 16 divisors (see below), whose sum is σ = 194818375680. Its totient is φ = 187245532656.

The previous prime is 191012291413. The next prime is 191012291467. The reversal of 191012291453 is 354192210191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191012291453 is a prime.

It is a super-2 number, since 2×191012291453² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191012291413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6566900 + ... + 6595922.

It is an arithmetic number, because the mean of its divisors is an integer number (12176148480).

Almost surely, 2^191012291453 is an apocalyptic number.

It is an amenable number.

191012291453 is a deficient number, since it is larger than the sum of its proper divisors (3806084227).

191012291453 is a wasteful number, since it uses less digits than its factorization.

191012291453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29696.

The product of its (nonzero) digits is 19440, while the sum is 38.

The spelling of 191012291453 in words is "one hundred ninety-one billion, twelve million, two hundred ninety-one thousand, four hundred fifty-three".