1655101566161 has 16 divisors (see below), whose sum is σ = 1688534807616. Its totient is φ = 1621751267136.

The previous prime is 1655101566109. The next prime is 1655101566197. The reversal of 1655101566161 is 1616651015561.

It is a de Polignac number, because none of the positive numbers 2^k-1655101566161 is a prime.

It is a super-2 number, since 2×1655101566161² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1655101566361) 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, 227251826 + ... + 227259108.

It is an arithmetic number, because the mean of its divisors is an integer number (105533425476).

Almost surely, 2^{1655101566161} is an apocalyptic number.

It is an amenable number.

1655101566161 is a deficient number, since it is larger than the sum of its proper divisors (33433241455).

1655101566161 is a wasteful number, since it uses less digits than its factorization.

1655101566161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12352.

The product of its (nonzero) digits is 162000, while the sum is 44.

The spelling of 1655101566161 in words is "one trillion, six hundred fifty-five billion, one hundred one million, five hundred sixty-six thousand, one hundred sixty-one".