133520996730 has 32 divisors (see below), whose sum is σ = 349582246848. Its totient is φ = 32368726400.

The previous prime is 133520996711. The next prime is 133520996747. The reversal of 133520996730 is 37699025331.

It is a self number, because there is not a number n which added to its sum of digits gives 133520996730.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202304211 + ... + 202304870.

It is an arithmetic number, because the mean of its divisors is an integer number (10924445214).

Almost surely, 2^133520996730 is an apocalyptic number.

133520996730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133520996730 is an abundant number, since it is smaller than the sum of its proper divisors (216061250118).

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

133520996730 is a wasteful number, since it uses less digits than its factorization.

133520996730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404609102.

The product of its (nonzero) digits is 918540, while the sum is 48.

The spelling of 133520996730 in words is "one hundred thirty-three billion, five hundred twenty million, nine hundred ninety-six thousand, seven hundred thirty".