133640771655 has 16 divisors (see below), whose sum is σ = 213933329280. Its totient is φ = 71239046688.

The previous prime is 133640771653. The next prime is 133640771681. The reversal of 133640771655 is 556177046331.

It is not a de Polignac number, because 133640771655 - 2¹ = 133640771653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133640771651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2221297 + ... + 2280666.

It is an arithmetic number, because the mean of its divisors is an integer number (13370833080).

Almost surely, 2^133640771655 is an apocalyptic number.

133640771655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133640771655 is a deficient number, since it is larger than the sum of its proper divisors (80292557625).

133640771655 is a wasteful number, since it uses less digits than its factorization.

133640771655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503950.

The product of its (nonzero) digits is 1587600, while the sum is 48.

The spelling of 133640771655 in words is "one hundred thirty-three billion, six hundred forty million, seven hundred seventy-one thousand, six hundred fifty-five".