133520178020 has 48 divisors (see below), whose sum is σ = 288150139200. Its totient is φ = 51932202624.

The previous prime is 133520177971. The next prime is 133520178041. The reversal of 133520178020 is 20871025331.

It is a super-2 number, since 2×133520178020² (a number of 23 digits) contains 22 as substring.

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, 1148531 + ... + 1259429.

It is an arithmetic number, because the mean of its divisors is an integer number (6003127900).

Almost surely, 2^133520178020 is an apocalyptic number.

133520178020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133520178020 is an abundant number, since it is smaller than the sum of its proper divisors (154629961180).

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

133520178020 is a wasteful number, since it uses less digits than its factorization.

133520178020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112572 (or 112570 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 133520178020 in words is "one hundred thirty-three billion, five hundred twenty million, one hundred seventy-eight thousand, twenty".