63554656503 has 16 divisors (see below), whose sum is σ = 93724402016. Its totient is φ = 38053514880.

The previous prime is 63554656489. The next prime is 63554656511. The reversal of 63554656503 is 30565645536.

It is not a de Polignac number, because 63554656503 - 2⁵ = 63554656471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63554656523) 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, 22020268 + ... + 22023153.

It is an arithmetic number, because the mean of its divisors is an integer number (5857775126).

Almost surely, 2^63554656503 is an apocalyptic number.

63554656503 is a deficient number, since it is larger than the sum of its proper divisors (30169745513).

63554656503 is a wasteful number, since it uses less digits than its factorization.

63554656503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44043474.

The product of its (nonzero) digits is 4860000, while the sum is 48.

The spelling of 63554656503 in words is "sixty-three billion, five hundred fifty-four million, six hundred fifty-six thousand, five hundred three".