6136315421 has 2 divisors, whose sum is σ = 6136315422. Its totient is φ = 6136315420.

The previous prime is 6136315379. The next prime is 6136315439. The reversal of 6136315421 is 1245136316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3161812900 + 2974502521 = 56230^2 + 54539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6136315421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6136315021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3068157710 + 3068157711.

It is an arithmetic number, because the mean of its divisors is an integer number (3068157711).

Almost surely, 2^6136315421 is an apocalyptic number.

It is an amenable number.

6136315421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6136315421 is an equidigital number, since it uses as much as digits as its factorization.

6136315421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 6136315421 is about 78334.6374281518. The cubic root of 6136315421 is about 1830.7788716761.

The spelling of 6136315421 in words is "six billion, one hundred thirty-six million, three hundred fifteen thousand, four hundred twenty-one".