133820760464 has 20 divisors (see below), whose sum is σ = 261170265804. Its totient is φ = 66421982208.

The previous prime is 133820760427. The next prime is 133820760503. The reversal of 133820760464 is 464067028331.

It can be written as a sum of positive squares in 2 ways, for example, as 71560530064 + 62260230400 = 267508^2 + 249520^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30522617 + ... + 30527000.

Almost surely, 2^133820760464 is an apocalyptic number.

It is an amenable number.

133820760464 is a deficient number, since it is larger than the sum of its proper divisors (127349505340).

133820760464 is a wasteful number, since it uses less digits than its factorization.

133820760464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61049762 (or 61049756 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 44.

Adding to 133820760464 its reverse (464067028331), we get a palindrome (597887788795).

The spelling of 133820760464 in words is "one hundred thirty-three billion, eight hundred twenty million, seven hundred sixty thousand, four hundred sixty-four".