155606565665051 has 32 divisors (see below), whose sum is σ = 167519084040000. Its totient is φ = 144109766338560.

The previous prime is 155606565665027. The next prime is 155606565665053. The reversal of 155606565665051 is 150566565606551.

It is a cyclic number.

It is not a de Polignac number, because 155606565665051 - 2⁶ = 155606565664987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155606565665053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84055415 + ... + 85886703.

It is an arithmetic number, because the mean of its divisors is an integer number (5234971376250).

Almost surely, 2^{155606565665051} is an apocalyptic number.

155606565665051 is a deficient number, since it is larger than the sum of its proper divisors (11912518374949).

155606565665051 is a wasteful number, since it uses less digits than its factorization.

155606565665051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831967.

The product of its (nonzero) digits is 121500000, while the sum is 62.

The spelling of 155606565665051 in words is "one hundred fifty-five trillion, six hundred six billion, five hundred sixty-five million, six hundred sixty-five thousand, fifty-one".