133640156522 has 4 divisors (see below), whose sum is σ = 200460234786. Its totient is φ = 66820078260.

The previous prime is 133640156497. The next prime is 133640156557. The reversal of 133640156522 is 225651046331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225651046331 = 1051 ⋅214701281.

It can be written as a sum of positive squares in only one way, i.e., 122675763001 + 10964393521 = 350251^2 + 104711^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33410039129 + ... + 33410039132.

Almost surely, 2^133640156522 is an apocalyptic number.

133640156522 is a deficient number, since it is larger than the sum of its proper divisors (66820078264).

133640156522 is an equidigital number, since it uses as much as digits as its factorization.

133640156522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66820078263.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 133640156522 in words is "one hundred thirty-three billion, six hundred forty million, one hundred fifty-six thousand, five hundred twenty-two".