2153155515 has 16 divisors (see below), whose sum is σ = 3937198848. Its totient is φ = 984299616.

The previous prime is 2153155481. The next prime is 2153155517. The reversal of 2153155515 is 5155513512.

It is not a de Polignac number, because 2153155515 - 2¹¹ = 2153153467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2153155517) 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, 10253017 + ... + 10253226.

It is an arithmetic number, because the mean of its divisors is an integer number (246074928).

Almost surely, 2^2153155515 is an apocalyptic number.

2153155515 is a deficient number, since it is larger than the sum of its proper divisors (1784043333).

2153155515 is a wasteful number, since it uses less digits than its factorization.

2153155515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20506258.

The product of its digits is 18750, while the sum is 33.

The square root of 2153155515 is about 46402.1067948428. The cubic root of 2153155515 is about 1291.2939993135.

The spelling of 2153155515 in words is "two billion, one hundred fifty-three million, one hundred fifty-five thousand, five hundred fifteen".