63618220523 has 8 divisors (see below), whose sum is σ = 74740287216. Its totient is φ = 53385919200.

The previous prime is 63618220517. The next prime is 63618220531. The reversal of 63618220523 is 32502281636.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63618220523 - 2⁴ = 63618220507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63618220123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222441188 + ... + 222441473.

It is an arithmetic number, because the mean of its divisors is an integer number (9342535902).

Almost surely, 2^63618220523 is an apocalyptic number.

63618220523 is a deficient number, since it is larger than the sum of its proper divisors (11122066693).

63618220523 is a wasteful number, since it uses less digits than its factorization.

63618220523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444882685.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 63618220523 in words is "sixty-three billion, six hundred eighteen million, two hundred twenty thousand, five hundred twenty-three".