63475281028 has 12 divisors (see below), whose sum is σ = 111304354000. Its totient is φ = 31674037032.

The previous prime is 63475281017. The next prime is 63475281049. The reversal of 63475281028 is 82018257436.

It is a super-2 number, since 2×63475281028² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15898626 + ... + 15902617.

Almost surely, 2^63475281028 is an apocalyptic number.

It is an amenable number.

63475281028 is a deficient number, since it is larger than the sum of its proper divisors (47829072972).

63475281028 is a wasteful number, since it uses less digits than its factorization.

63475281028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31801746 (or 31801744 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 63475281028 in words is "sixty-three billion, four hundred seventy-five million, two hundred eighty-one thousand, twenty-eight".