63405664701 has 32 divisors (see below), whose sum is σ = 86758034688. Its totient is φ = 41178439680.

The previous prime is 63405664649. The next prime is 63405664703. The reversal of 63405664701 is 10746650436.

It is not a de Polignac number, because 63405664701 - 2¹¹ = 63405662653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63405664703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8107345 + ... + 8115161.

It is an arithmetic number, because the mean of its divisors is an integer number (2711188584).

Almost surely, 2^63405664701 is an apocalyptic number.

It is an amenable number.

63405664701 is a deficient number, since it is larger than the sum of its proper divisors (23352369987).

63405664701 is a wasteful number, since it uses less digits than its factorization.

63405664701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8341.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 63405664701 in words is "sixty-three billion, four hundred five million, six hundred sixty-four thousand, seven hundred one".