63561685834 has 16 divisors (see below), whose sum is σ = 104724060480. Its totient is φ = 28799115840.

The previous prime is 63561685793. The next prime is 63561685871. The reversal of 63561685834 is 43858616536.

63561685834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36361647 + ... + 36363394.

It is an arithmetic number, because the mean of its divisors is an integer number (6545253780).

Almost surely, 2^63561685834 is an apocalyptic number.

63561685834 is a deficient number, since it is larger than the sum of its proper divisors (41162374646).

63561685834 is a wasteful number, since it uses less digits than its factorization.

63561685834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72725085.

The product of its digits is 12441600, while the sum is 55.

The spelling of 63561685834 in words is "sixty-three billion, five hundred sixty-one million, six hundred eighty-five thousand, eight hundred thirty-four".