2155632612011 has 16 divisors (see below), whose sum is σ = 2260079044608. Its totient is φ = 2053678536000.

The previous prime is 2155632611969. The next prime is 2155632612017. The reversal of 2155632612011 is 1102162365512.

It is a cyclic number.

It is not a de Polignac number, because 2155632612011 - 2¹⁸ = 2155632349867 is a prime.

It is a super-2 number, since 2×2155632612011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155632612017) 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, 7702586 + ... + 7977536.

It is an arithmetic number, because the mean of its divisors is an integer number (141254940288).

Almost surely, 2^{2155632612011} is an apocalyptic number.

2155632612011 is a deficient number, since it is larger than the sum of its proper divisors (104446432597).

2155632612011 is a wasteful number, since it uses less digits than its factorization.

2155632612011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279482.

The product of its (nonzero) digits is 21600, while the sum is 35.

Adding to 2155632612011 its reverse (1102162365512), we get a palindrome (3257794977523).

The spelling of 2155632612011 in words is "two trillion, one hundred fifty-five billion, six hundred thirty-two million, six hundred twelve thousand, eleven".