63961456135 has 16 divisors (see below), whose sum is σ = 77789831616. Its totient is φ = 50481773568.

The previous prime is 63961456129. The next prime is 63961456157. The reversal of 63961456135 is 53165416936.

It is a cyclic number.

It is not a de Polignac number, because 63961456135 - 2⁷ = 63961456007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54267 + ... + 361756.

It is an arithmetic number, because the mean of its divisors is an integer number (4861864476).

Almost surely, 2^63961456135 is an apocalyptic number.

63961456135 is a deficient number, since it is larger than the sum of its proper divisors (13828375481).

63961456135 is a wasteful number, since it uses less digits than its factorization.

63961456135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416442.

The product of its digits is 1749600, while the sum is 49.

The spelling of 63961456135 in words is "sixty-three billion, nine hundred sixty-one million, four hundred fifty-six thousand, one hundred thirty-five".