133764284591 has 16 divisors (see below), whose sum is σ = 156263918400. Its totient is φ = 114456222720.

The previous prime is 133764284513. The next prime is 133764284597. The reversal of 133764284591 is 195482467331.

It is not a de Polignac number, because 133764284591 - 2²² = 133760090287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133764284597) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 140030 + ... + 535851.

It is an arithmetic number, because the mean of its divisors is an integer number (9766494900).

Almost surely, 2^133764284591 is an apocalyptic number.

133764284591 is a deficient number, since it is larger than the sum of its proper divisors (22499633809).

133764284591 is an frugal number, since it uses more digits than its factorization.

133764284591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676479 (or 676465 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

Adding to 133764284591 its sum of digits (53), we get a square (133764284644 = 365738²).

The spelling of 133764284591 in words is "one hundred thirty-three billion, seven hundred sixty-four million, two hundred eighty-four thousand, five hundred ninety-one".