2151513513 has 6 divisors (see below), whose sum is σ = 3107741754. Its totient is φ = 1434342336.

The previous prime is 2151513473. The next prime is 2151513527. The reversal of 2151513513 is 3153151512.

2151513513 is a `hidden beast` number, since 2 + 1 + 515 + 135 + 13 = 666.

2151513513 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 can be written as a sum of positive squares in only one way, i.e., 1876882329 + 274631184 = 43323^2 + 16572^2 .

It is not a de Polignac number, because 2151513513 - 2⁸ = 2151513257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151513593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119528520 + ... + 119528537.

It is an arithmetic number, because the mean of its divisors is an integer number (517956959).

Almost surely, 2^2151513513 is an apocalyptic number.

It is an amenable number.

2151513513 is a deficient number, since it is larger than the sum of its proper divisors (956228241).

2151513513 is a wasteful number, since it uses less digits than its factorization.

2151513513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239057063 (or 239057060 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 2151513513 is about 46384.4102366302. The cubic root of 2151513513 is about 1290.9656677822.

The spelling of 2151513513 in words is "two billion, one hundred fifty-one million, five hundred thirteen thousand, five hundred thirteen".