63920614538 has 32 divisors (see below), whose sum is σ = 109507930560. Its totient is φ = 27714924160.

The previous prime is 63920614531. The next prime is 63920614577. The reversal of 63920614538 is 83541602936.

It is a junction number, because it is equal to n+sod(n) for n = 63920614492 and 63920614501.

It is not an unprimeable number, because it can be changed into a prime (63920614531) 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, 550595 + ... + 656502.

It is an arithmetic number, because the mean of its divisors is an integer number (3422122830).

Almost surely, 2^63920614538 is an apocalyptic number.

63920614538 is a deficient number, since it is larger than the sum of its proper divisors (45587316022).

63920614538 is a wasteful number, since it uses less digits than its factorization.

63920614538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207222.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 63920614538 in words is "sixty-three billion, nine hundred twenty million, six hundred fourteen thousand, five hundred thirty-eight".