6431633705157 has 8 divisors (see below), whose sum is σ = 9079953466176. Its totient is φ = 4035534873792.

The previous prime is 6431633705129. The next prime is 6431633705207. The reversal of 6431633705157 is 7515073361346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6431633705157 - 2⁸ = 6431633704901 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 126110464807 = 6431633705157 / (6 + 4 + 3 + 1 + 6 + 3 + 3 + 7 + 0 + 5 + 1 + 5 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6431633705957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63055232353 + ... + 63055232454.

It is an arithmetic number, because the mean of its divisors is an integer number (1134994183272).

Almost surely, 2^{6431633705157} is an apocalyptic number.

It is an amenable number.

6431633705157 is a deficient number, since it is larger than the sum of its proper divisors (2648319761019).

6431633705157 is a wasteful number, since it uses less digits than its factorization.

6431633705157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126110464827.

The product of its (nonzero) digits is 4762800, while the sum is 51.

It can be divided in two parts, 64316 and 33705157, that multiplied together give a palindrome (2167780877612).

The spelling of 6431633705157 in words is "six trillion, four hundred thirty-one billion, six hundred thirty-three million, seven hundred five thousand, one hundred fifty-seven".