2155630550623 has 16 divisors (see below), whose sum is σ = 2377687302144. Its totient is φ = 1938041328160.

The previous prime is 2155630550603. The next prime is 2155630550627. The reversal of 2155630550623 is 3260550365512.

It is a cyclic number.

It is not a de Polignac number, because 2155630550623 - 2⁹ = 2155630550111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2155630550623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155630550627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2616415 + ... + 3340192.

It is an arithmetic number, because the mean of its divisors is an integer number (148605456384).

Almost surely, 2^{2155630550623} is an apocalyptic number.

2155630550623 is a deficient number, since it is larger than the sum of its proper divisors (222056751521).

2155630550623 is a wasteful number, since it uses less digits than its factorization.

2155630550623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5956982.

The product of its (nonzero) digits is 810000, while the sum is 43.

The spelling of 2155630550623 in words is "two trillion, one hundred fifty-five billion, six hundred thirty million, five hundred fifty thousand, six hundred twenty-three".