63516154481 has 16 divisors (see below), whose sum is σ = 72011399040. Its totient is φ = 55537332480.

The previous prime is 63516154463. The next prime is 63516154489. The reversal of 63516154481 is 18445161536.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63516154481 is a prime.

It is a super-2 number, since 2×63516154481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63516154489) 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, 3050201 + ... + 3070953.

It is an arithmetic number, because the mean of its divisors is an integer number (4500712440).

Almost surely, 2^63516154481 is an apocalyptic number.

It is an amenable number.

63516154481 is a deficient number, since it is larger than the sum of its proper divisors (8495244559).

63516154481 is a wasteful number, since it uses less digits than its factorization.

63516154481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33176.

The product of its digits is 345600, while the sum is 44.

The spelling of 63516154481 in words is "sixty-three billion, five hundred sixteen million, one hundred fifty-four thousand, four hundred eighty-one".