133136255464 has 8 divisors (see below), whose sum is σ = 249630479010. Its totient is φ = 66568127728.

The previous prime is 133136255431. The next prime is 133136255501. The reversal of 133136255464 is 464552631331.

It can be written as a sum of positive squares in only one way, i.e., 74770527364 + 58365728100 = 273442^2 + 241590^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 133136255464.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8321015959 + ... + 8321015974.

Almost surely, 2^133136255464 is an apocalyptic number.

It is an amenable number.

133136255464 is a deficient number, since it is larger than the sum of its proper divisors (116494223546).

133136255464 is a wasteful number, since it uses less digits than its factorization.

133136255464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16642031939 (or 16642031935 counting only the distinct ones).

The product of its digits is 777600, while the sum is 43.

Adding to 133136255464 its reverse (464552631331), we get a palindrome (597688886795).

The spelling of 133136255464 in words is "one hundred thirty-three billion, one hundred thirty-six million, two hundred fifty-five thousand, four hundred sixty-four".