63461728926856 has 256 divisors, whose sum is σ = 135555082790400. Its totient is φ = 27657629024256.

The previous prime is 63461728926847. The next prime is 63461728926929. The reversal of 63461728926856 is 65862982716436.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7880503726 + ... + 7880511778.

It is an arithmetic number, because the mean of its divisors is an integer number (529512042150).

Almost surely, 2^{63461728926856} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63461728926856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67777541395200).

63461728926856 is an abundant number, since it is smaller than the sum of its proper divisors (72093353863544).

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

63461728926856 is a wasteful number, since it uses less digits than its factorization.

63461728926856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8608 (or 8604 counting only the distinct ones).

The product of its digits is 1254113280, while the sum is 73.

The spelling of 63461728926856 in words is "sixty-three trillion, four hundred sixty-one billion, seven hundred twenty-eight million, nine hundred twenty-six thousand, eight hundred fifty-six".