63914771561 has 8 divisors (see below), whose sum is σ = 64564329984. Its totient is φ = 63268390080.

The previous prime is 63914771551. The next prime is 63914771603. The reversal of 63914771561 is 16517741936.

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 63914771561 - 2¹⁰ = 63914770537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63914771551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753785 + ... + 834278.

It is an arithmetic number, because the mean of its divisors is an integer number (8070541248).

Almost surely, 2^63914771561 is an apocalyptic number.

It is an amenable number.

63914771561 is a deficient number, since it is larger than the sum of its proper divisors (649558423).

63914771561 is a wasteful number, since it uses less digits than its factorization.

63914771561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588471.

The product of its digits is 952560, while the sum is 50.

The spelling of 63914771561 in words is "sixty-three billion, nine hundred fourteen million, seven hundred seventy-one thousand, five hundred sixty-one".