2151115611 has 16 divisors (see below), whose sum is σ = 2925455616. Its totient is φ = 1405485536.

The previous prime is 2151115607. The next prime is 2151115627. The reversal of 2151115611 is 1165111512.

2151115611 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2151115611 - 2² = 2151115607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151115691) 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, 149416 + ... + 163178.

It is an arithmetic number, because the mean of its divisors is an integer number (182840976).

Almost surely, 2^2151115611 is an apocalyptic number.

2151115611 is a deficient number, since it is larger than the sum of its proper divisors (774340005).

2151115611 is a wasteful number, since it uses less digits than its factorization.

2151115611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14802.

The product of its digits is 300, while the sum is 24.

The square root of 2151115611 is about 46380.1208601271. The cubic root of 2151115611 is about 1290.8860789272.

The spelling of 2151115611 in words is "two billion, one hundred fifty-one million, one hundred fifteen thousand, six hundred eleven".