6351536461 has 4 divisors (see below), whose sum is σ = 6367066300. Its totient is φ = 6336006624.

The previous prime is 6351536453. The next prime is 6351536479. The reversal of 6351536461 is 1646351536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2269093225 + 4082443236 = 47635^2 + 63894^2 .

It is a cyclic number.

It is not a de Polignac number, because 6351536461 - 2³ = 6351536453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6351506461) 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, 7764306 + ... + 7765123.

It is an arithmetic number, because the mean of its divisors is an integer number (1591766575).

Almost surely, 2^6351536461 is an apocalyptic number.

It is an amenable number.

6351536461 is a deficient number, since it is larger than the sum of its proper divisors (15529839).

6351536461 is a wasteful number, since it uses less digits than its factorization.

6351536461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15529838.

The product of its digits is 194400, while the sum is 40.

The square root of 6351536461 is about 79696.5272831884. The cubic root of 6351536461 is about 1851.9372413064.

Adding to 6351536461 its reverse (1646351536), we get a palindrome (7997887997).

The spelling of 6351536461 in words is "six billion, three hundred fifty-one million, five hundred thirty-six thousand, four hundred sixty-one".