133723297526641 has 3 divisors (see below), whose sum is σ = 133723309090521. Its totient is φ = 133723285962762.

The previous prime is 133723297526591. The next prime is 133723297526653. The reversal of 133723297526641 is 146625792327331.

The square root of 133723297526641 is 11563879.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 133723297526641 - 2²¹ = 133723295429489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133723297526641.

It is not an unprimeable number, because it can be changed into a prime (133723297526671) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5781940 + ... + 17345818.

It is an arithmetic number, because the mean of its divisors is an integer number (44574436363507).

Almost surely, 2^{133723297526641} is an apocalyptic number.

133723297526641 is the 11563879-th square number.

133723297526641 is the 5781940-th centered octagonal number.

It is an amenable number.

133723297526641 is a deficient number, since it is larger than the sum of its proper divisors (11563880).

133723297526641 is an frugal number, since it uses more digits than its factorization.

133723297526641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23127758 (or 11563879 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 61.

The spelling of 133723297526641 in words is "one hundred thirty-three trillion, seven hundred twenty-three billion, two hundred ninety-seven million, five hundred twenty-six thousand, six hundred forty-one".