165655405436126 has 16 divisors (see below), whose sum is σ = 251888840394624. Its totient is φ = 81692475341184.

The previous prime is 165655405436123. The next prime is 165655405436137. The reversal of 165655405436126 is 621634504556561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165655405436123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16062170 + ... + 24275586.

It is an arithmetic number, because the mean of its divisors is an integer number (15743052524664).

Almost surely, 2^{165655405436126} is an apocalyptic number.

165655405436126 is a deficient number, since it is larger than the sum of its proper divisors (86233434958498).

165655405436126 is a wasteful number, since it uses less digits than its factorization.

165655405436126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8351635.

The product of its (nonzero) digits is 77760000, while the sum is 59.

The spelling of 165655405436126 in words is "one hundred sixty-five trillion, six hundred fifty-five billion, four hundred five million, four hundred thirty-six thousand, one hundred twenty-six".