63945518494 has 16 divisors (see below), whose sum is σ = 112687207920. Its totient is φ = 26830287360.

The previous prime is 63945518477. The next prime is 63945518503. The reversal of 63945518494 is 49481554936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111792579 + ... + 111793150.

It is an arithmetic number, because the mean of its divisors is an integer number (7042950495).

Almost surely, 2^63945518494 is an apocalyptic number.

63945518494 is a deficient number, since it is larger than the sum of its proper divisors (48741689426).

63945518494 is a wasteful number, since it uses less digits than its factorization.

63945518494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223585755.

The product of its digits is 18662400, while the sum is 58.

The spelling of 63945518494 in words is "sixty-three billion, nine hundred forty-five million, five hundred eighteen thousand, four hundred ninety-four".