63500139131 has 16 divisors (see below), whose sum is σ = 74638706688. Its totient is φ = 53260298400.

The previous prime is 63500139127. The next prime is 63500139221. The reversal of 63500139131 is 13193100536.

It is a cyclic number.

It is not a de Polignac number, because 63500139131 - 2² = 63500139127 is a prime.

It is a super-2 number, since 2×63500139131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63500139331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180326 + ... + 399396.

It is an arithmetic number, because the mean of its divisors is an integer number (4664919168).

Almost surely, 2^63500139131 is an apocalyptic number.

63500139131 is a deficient number, since it is larger than the sum of its proper divisors (11138567557).

63500139131 is a wasteful number, since it uses less digits than its factorization.

63500139131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221122.

The product of its (nonzero) digits is 7290, while the sum is 32.

Adding to 63500139131 its reverse (13193100536), we get a palindrome (76693239667).

The spelling of 63500139131 in words is "sixty-three billion, five hundred million, one hundred thirty-nine thousand, one hundred thirty-one".