63640230213 has 48 divisors (see below), whose sum is σ = 104802287616. Its totient is φ = 33585034560.

The previous prime is 63640230191. The next prime is 63640230221. The reversal of 63640230213 is 31203204636.

It is not a de Polignac number, because 63640230213 - 2¹³ = 63640222021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63640230253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 327868 + ... + 484538.

It is an arithmetic number, because the mean of its divisors is an integer number (2183380992).

Almost surely, 2^63640230213 is an apocalyptic number.

It is an amenable number.

63640230213 is a deficient number, since it is larger than the sum of its proper divisors (41162057403).

63640230213 is a wasteful number, since it uses less digits than its factorization.

63640230213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156762 (or 156733 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 63640230213 its reverse (31203204636), we get a palindrome (94843434849).

The spelling of 63640230213 in words is "sixty-three billion, six hundred forty million, two hundred thirty thousand, two hundred thirteen".