133499397960 has 48 divisors (see below), whose sum is σ = 433873044540. Its totient is φ = 35599839360.

The previous prime is 133499397949. The next prime is 133499397979. The reversal of 133499397960 is 69793994331.

133499397960 is a `hidden beast` number, since 13 + 3 + 499 + 3 + 9 + 79 + 60 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 133249821156 + 249576804 = 365034^2 + 15798^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 185415471 + ... + 185416190.

Almost surely, 2^133499397960 is an apocalyptic number.

133499397960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133499397960 is an abundant number, since it is smaller than the sum of its proper divisors (300373646580).

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

133499397960 is a wasteful number, since it uses less digits than its factorization.

133499397960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370831678 (or 370831671 counting only the distinct ones).

The product of its (nonzero) digits is 29760696, while the sum is 63.

The spelling of 133499397960 in words is "one hundred thirty-three billion, four hundred ninety-nine million, three hundred ninety-seven thousand, nine hundred sixty".