2151777513 has 16 divisors (see below), whose sum is σ = 2948684480. Its totient is φ = 1394750016.

The previous prime is 2151777401. The next prime is 2151777521. The reversal of 2151777513 is 3157771512.

It is not a de Polignac number, because 2151777513 - 2¹² = 2151773417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151777553) 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, 169131 + ... + 181407.

It is an arithmetic number, because the mean of its divisors is an integer number (184292780).

Almost surely, 2^2151777513 is an apocalyptic number.

It is an amenable number.

2151777513 is a deficient number, since it is larger than the sum of its proper divisors (796906967).

2151777513 is a wasteful number, since it uses less digits than its factorization.

2151777513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13896.

The product of its digits is 51450, while the sum is 39.

The square root of 2151777513 is about 46387.2559330685. The cubic root of 2151777513 is about 1291.0184679770.

The spelling of 2151777513 in words is "two billion, one hundred fifty-one million, seven hundred seventy-seven thousand, five hundred thirteen".