63105726431 has 8 divisors (see below), whose sum is σ = 69672040704. Its totient is φ = 56677650520.

The previous prime is 63105726421. The next prime is 63105726449. The reversal of 63105726431 is 13462750136.

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

It is a cyclic number.

It is not a de Polignac number, because 63105726431 - 2¹⁸ = 63105464287 is a prime.

It is a super-2 number, since 2×63105726431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63105726421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34558631 + ... + 34560456.

It is an arithmetic number, because the mean of its divisors is an integer number (8709005088).

Almost surely, 2^63105726431 is an apocalyptic number.

63105726431 is a deficient number, since it is larger than the sum of its proper divisors (6566314273).

63105726431 is a wasteful number, since it uses less digits than its factorization.

63105726431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69119181.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 63105726431 in words is "sixty-three billion, one hundred five million, seven hundred twenty-six thousand, four hundred thirty-one".