133485356565 has 168 divisors, whose sum is σ = 275480069760. Its totient is φ = 61901547840.

The previous prime is 133485356551. The next prime is 133485356581. The reversal of 133485356565 is 565653584331.

It is a happy number.

133485356565 is a `hidden beast` number, since 1 + 3 + 3 + 48 + 5 + 35 + 6 + 565 = 666.

It is not a de Polignac number, because 133485356565 - 2¹⁷ = 133485225493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 10137456 + ... + 10150614.

It is an arithmetic number, because the mean of its divisors is an integer number (1639762320).

Almost surely, 2^133485356565 is an apocalyptic number.

133485356565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133485356565 is an abundant number, since it is smaller than the sum of its proper divisors (141994713195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133485356565 is a wasteful number, since it uses less digits than its factorization.

133485356565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13227 (or 13201 counting only the distinct ones).

The product of its digits is 19440000, while the sum is 54.

The spelling of 133485356565 in words is "one hundred thirty-three billion, four hundred eighty-five million, three hundred fifty-six thousand, five hundred sixty-five".