63271379978 has 16 divisors (see below), whose sum is σ = 97013928960. Its totient is φ = 30934619856.

The previous prime is 63271379959. The next prime is 63271380001. The reversal of 63271379978 is 87997317236.

It is a self number, because there is not a number n which added to its sum of digits gives 63271379978.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199226 + ... + 407717.

It is an arithmetic number, because the mean of its divisors is an integer number (6063370560).

Almost surely, 2^63271379978 is an apocalyptic number.

63271379978 is a deficient number, since it is larger than the sum of its proper divisors (33742548982).

63271379978 is a wasteful number, since it uses less digits than its factorization.

63271379978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608101.

The product of its digits is 24004512, while the sum is 62.

The spelling of 63271379978 in words is "sixty-three billion, two hundred seventy-one million, three hundred seventy-nine thousand, nine hundred seventy-eight".