63634766067474 has 16 divisors (see below), whose sum is σ = 145450893868608. Its totient is φ = 18181361733552.

The previous prime is 63634766067371. The next prime is 63634766067479. The reversal of 63634766067474 is 47476066743636.

It is a junction number, because it is equal to n+sod(n) for n = 63634766067399 and 63634766067408.

It is not an unprimeable number, because it can be changed into a prime (63634766067479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757556738857 + ... + 757556738940.

It is an arithmetic number, because the mean of its divisors is an integer number (9090680866788).

Almost surely, 2^{63634766067474} is an apocalyptic number.

63634766067474 is an abundant number, since it is smaller than the sum of its proper divisors (81816127801134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63634766067474 is a wasteful number, since it uses less digits than its factorization.

63634766067474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515113477809.

The product of its (nonzero) digits is 1536288768, while the sum is 69.

The spelling of 63634766067474 in words is "sixty-three trillion, six hundred thirty-four billion, seven hundred sixty-six million, sixty-seven thousand, four hundred seventy-four".