133372506778 has 32 divisors (see below), whose sum is σ = 229167082368. Its totient is φ = 57027672000.

The previous prime is 133372506763. The next prime is 133372506847. The reversal of 133372506778 is 877605273331.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 12580576 + ... + 12591172.

It is an arithmetic number, because the mean of its divisors is an integer number (7161471324).

Almost surely, 2^133372506778 is an apocalyptic number.

133372506778 is a deficient number, since it is larger than the sum of its proper divisors (95794575590).

133372506778 is a wasteful number, since it uses less digits than its factorization.

133372506778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12598.

The product of its (nonzero) digits is 4445280, while the sum is 52.

The spelling of 133372506778 in words is "one hundred thirty-three billion, three hundred seventy-two million, five hundred six thousand, seven hundred seventy-eight".