2155630550611 has 8 divisors (see below), whose sum is σ = 2181635018640. Its totient is φ = 2129626868832.

The previous prime is 2155630550603. The next prime is 2155630550627. The reversal of 2155630550611 is 1160550365512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2155630550611 - 2³ = 2155630550603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155630550651) 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, 6821905 + ... + 7130893.

It is an arithmetic number, because the mean of its divisors is an integer number (272704377330).

Almost surely, 2^{2155630550611} is an apocalyptic number.

2155630550611 is a deficient number, since it is larger than the sum of its proper divisors (26004468029).

2155630550611 is an equidigital number, since it uses as much as digits as its factorization.

2155630550611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393125.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 2155630550611 in words is "two trillion, one hundred fifty-five billion, six hundred thirty million, five hundred fifty thousand, six hundred eleven".