654251035663 has 4 divisors (see below), whose sum is σ = 692736390720. Its totient is φ = 615765680608.

The previous prime is 654251035643. The next prime is 654251035673. The reversal of 654251035663 is 366530152456.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-654251035663 is a prime.

It is a super-2 number, since 2×654251035663² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654251035643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19242677503 + ... + 19242677536.

It is an arithmetic number, because the mean of its divisors is an integer number (173184097680).

Almost surely, 2^654251035663 is an apocalyptic number.

654251035663 is a deficient number, since it is larger than the sum of its proper divisors (38485355057).

654251035663 is a wasteful number, since it uses less digits than its factorization.

654251035663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38485355056.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 654251035663 in words is "six hundred fifty-four billion, two hundred fifty-one million, thirty-five thousand, six hundred sixty-three".