63138201257 has 4 divisors (see below), whose sum is σ = 63635352576. Its totient is φ = 62641049940.

The previous prime is 63138201253. The next prime is 63138201319. The reversal of 63138201257 is 75210283136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63138201257 - 2² = 63138201253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63138201257.

It is not an unprimeable number, because it can be changed into a prime (63138201253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248575469 + ... + 248575722.

It is an arithmetic number, because the mean of its divisors is an integer number (15908838144).

Almost surely, 2^63138201257 is an apocalyptic number.

It is an amenable number.

63138201257 is a deficient number, since it is larger than the sum of its proper divisors (497151319).

63138201257 is a wasteful number, since it uses less digits than its factorization.

63138201257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497151318.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 63138201257 in words is "sixty-three billion, one hundred thirty-eight million, two hundred one thousand, two hundred fifty-seven".