63971285348 has 6 divisors (see below), whose sum is σ = 111949749366. Its totient is φ = 31985642672.

The previous prime is 63971285333. The next prime is 63971285353. The reversal of 63971285348 is 84358217936.

It can be written as a sum of positive squares in only one way, i.e., 62764278784 + 1207006564 = 250528^2 + 34742^2 .

It is a super-2 number, since 2×63971285348² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63971285293 and 63971285302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7996410665 + ... + 7996410672.

It is an arithmetic number, because the mean of its divisors is an integer number (18658291561).

Almost surely, 2^63971285348 is an apocalyptic number.

It is an amenable number.

63971285348 is a deficient number, since it is larger than the sum of its proper divisors (47978464018).

63971285348 is a wasteful number, since it uses less digits than its factorization.

63971285348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15992821341 (or 15992821339 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 63971285348 in words is "sixty-three billion, nine hundred seventy-one million, two hundred eighty-five thousand, three hundred forty-eight".