133878240802 has 4 divisors (see below), whose sum is σ = 200817361206. Its totient is φ = 66939120400.

The previous prime is 133878240773. The next prime is 133878240803. The reversal of 133878240802 is 208042878331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 126571581361 + 7306659441 = 355769^2 + 85479^2 .

It is not an unprimeable number, because it can be changed into a prime (133878240803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33469560199 + ... + 33469560202.

Almost surely, 2^133878240802 is an apocalyptic number.

133878240802 is a deficient number, since it is larger than the sum of its proper divisors (66939120404).

133878240802 is an equidigital number, since it uses as much as digits as its factorization.

133878240802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66939120403.

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 133878240802 in words is "one hundred thirty-three billion, eight hundred seventy-eight million, two hundred forty thousand, eight hundred two".