63646138030 has 16 divisors (see below), whose sum is σ = 117357269904. Its totient is φ = 24837517120.

The previous prime is 63646138013. The next prime is 63646138051. The reversal of 63646138030 is 3083164636.

It is a super-2 number, since 2×63646138030² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77616832 + ... + 77617651.

It is an arithmetic number, because the mean of its divisors is an integer number (7334829369).

Almost surely, 2^63646138030 is an apocalyptic number.

63646138030 is a deficient number, since it is larger than the sum of its proper divisors (53711131874).

63646138030 is a wasteful number, since it uses less digits than its factorization.

63646138030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155234531.

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 63646138030 in words is "sixty-three billion, six hundred forty-six million, one hundred thirty-eight thousand, thirty".