101655605155561 has 24 divisors (see below), whose sum is σ = 108773115836000. Its totient is φ = 94944630344256.

The previous prime is 101655605155547. The next prime is 101655605155613. The reversal of 101655605155561 is 165551506556101.

It is a happy number.

It is not a de Polignac number, because 101655605155561 - 2¹⁵ = 101655605122793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101655605155499 and 101655605155508.

It is not an unprimeable number, because it can be changed into a prime (101655605195561) 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 23 ways as a sum of consecutive naturals, for example, 71793565 + ... + 73195813.

Almost surely, 2^{101655605155561} is an apocalyptic number.

It is an amenable number.

101655605155561 is a deficient number, since it is larger than the sum of its proper divisors (7117510680439).

101655605155561 is a wasteful number, since it uses less digits than its factorization.

101655605155561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405525 (or 1405502 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 52.

The spelling of 101655605155561 in words is "one hundred one trillion, six hundred fifty-five billion, six hundred five million, one hundred fifty-five thousand, five hundred sixty-one".