6151630521 has 4 divisors (see below), whose sum is σ = 8202174032. Its totient is φ = 4101087012.

The previous prime is 6151630453. The next prime is 6151630549. The reversal of 6151630521 is 1250361516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6151630521 - 2¹⁴ = 6151614137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6151630571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025271751 + ... + 1025271756.

It is an arithmetic number, because the mean of its divisors is an integer number (2050543508).

Almost surely, 2^6151630521 is an apocalyptic number.

It is an amenable number.

6151630521 is a deficient number, since it is larger than the sum of its proper divisors (2050543511).

6151630521 is a wasteful number, since it uses less digits than its factorization.

6151630521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050543510.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 6151630521 is about 78432.3308400305. The cubic root of 6151630521 is about 1832.3007006306.

The spelling of 6151630521 in words is "six billion, one hundred fifty-one million, six hundred thirty thousand, five hundred twenty-one".