63911075613 has 16 divisors (see below), whose sum is σ = 106241788416. Its totient is φ = 33200558640.

The previous prime is 63911075573. The next prime is 63911075639. The reversal of 63911075613 is 31657011936.

It is not a de Polignac number, because 63911075613 - 2¹² = 63911071517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63911075113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138335431 + ... + 138335892.

It is an arithmetic number, because the mean of its divisors is an integer number (6640111776).

Almost surely, 2^63911075613 is an apocalyptic number.

It is an amenable number.

63911075613 is a deficient number, since it is larger than the sum of its proper divisors (42330712803).

63911075613 is a wasteful number, since it uses less digits than its factorization.

63911075613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276671344.

The product of its (nonzero) digits is 102060, while the sum is 42.

The spelling of 63911075613 in words is "sixty-three billion, nine hundred eleven million, seventy-five thousand, six hundred thirteen".