2155654632111 has 64 divisors (see below), whose sum is σ = 3027681151488. Its totient is φ = 1362835127808.

The previous prime is 2155654632083. The next prime is 2155654632149. The reversal of 2155654632111 is 1112364565512.

It is a de Polignac number, because none of the positive numbers 2^k-2155654632111 is a prime.

It is a super-2 number, since 2×2155654632111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155654632181) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1092576121 + ... + 1092578093.

It is an arithmetic number, because the mean of its divisors is an integer number (47307517992).

Almost surely, 2^{2155654632111} is an apocalyptic number.

2155654632111 is a deficient number, since it is larger than the sum of its proper divisors (872026519377).

2155654632111 is a wasteful number, since it uses less digits than its factorization.

2155654632111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560.

The product of its digits is 216000, while the sum is 42.

The spelling of 2155654632111 in words is "two trillion, one hundred fifty-five billion, six hundred fifty-four million, six hundred thirty-two thousand, one hundred eleven".