63425882872081 has 8 divisors (see below), whose sum is σ = 67161963904200. Its totient is φ = 59690373700608.

The previous prime is 63425882872073. The next prime is 63425882872103. The reversal of 63425882872081 is 18027828852436.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40971315981456 + 22454566890625 = 6400884^2 + 4738625^2 .

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 63425882872081 - 2³ = 63425882872073 is a prime.

It is a super-2 number, since 2×63425882872081² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63425882872031) 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, 142736796 + ... + 143180461.

It is an arithmetic number, because the mean of its divisors is an integer number (8395245488025).

Almost surely, 2^{63425882872081} is an apocalyptic number.

It is an amenable number.

63425882872081 is a deficient number, since it is larger than the sum of its proper divisors (3736081032119).

63425882872081 is a wasteful number, since it uses less digits than its factorization.

63425882872081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285930323.

The product of its (nonzero) digits is 82575360, while the sum is 64.

The spelling of 63425882872081 in words is "sixty-three trillion, four hundred twenty-five billion, eight hundred eighty-two million, eight hundred seventy-two thousand, eighty-one".