135565221272046 has 16 divisors (see below), whose sum is σ = 271138380724944. Its totient is φ = 45187084060544.

The previous prime is 135565221271999. The next prime is 135565221272077. The reversal of 135565221272046 is 640272122565531.

It is a happy number.

It is a super-2 number, since 2×135565221272046² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135565221272046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330535515 + ... + 330945398.

It is an arithmetic number, because the mean of its divisors is an integer number (16946148795309).

Almost surely, 2^{135565221272046} is an apocalyptic number.

135565221272046 is an abundant number, since it is smaller than the sum of its proper divisors (135573159452898).

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

135565221272046 is a wasteful number, since it uses less digits than its factorization.

135565221272046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661515075.

The product of its (nonzero) digits is 6048000, while the sum is 51.

The spelling of 135565221272046 in words is "one hundred thirty-five trillion, five hundred sixty-five billion, two hundred twenty-one million, two hundred seventy-two thousand, forty-six".