2115550555533 has 40 divisors (see below), whose sum is σ = 3192822372960. Its totient is φ = 1395863111520.

The previous prime is 2115550555513. The next prime is 2115550555541. The reversal of 2115550555533 is 3355550555112.

2115550555533 is a `hidden beast` number, since 2 + 1 + 15 + 5 + 50 + 5 + 55 + 533 = 666.

It is not a de Polignac number, because 2115550555533 - 2¹² = 2115550551437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115550555513) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9080658 + ... + 9310716.

It is an arithmetic number, because the mean of its divisors is an integer number (79820559324).

Almost surely, 2^{2115550555533} is an apocalyptic number.

It is an amenable number.

2115550555533 is a deficient number, since it is larger than the sum of its proper divisors (1077271817427).

2115550555533 is a wasteful number, since it uses less digits than its factorization.

2115550555533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231239 (or 231230 counting only the distinct ones).

The product of its (nonzero) digits is 1406250, while the sum is 45.

The spelling of 2115550555533 in words is "two trillion, one hundred fifteen billion, five hundred fifty million, five hundred fifty-five thousand, five hundred thirty-three".