654046501645 has 4 divisors (see below), whose sum is σ = 784855801980. Its totient is φ = 523237201312.

The previous prime is 654046501621. The next prime is 654046501679. The reversal of 654046501645 is 546105640456.

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

It can be written as a sum of positive squares in 2 ways, for example, as 127787660676 + 526258840969 = 357474^2 + 725437^2 .

It is a cyclic number.

It is not a de Polignac number, because 654046501645 - 2⁵ = 654046501613 is a prime.

It is a super-3 number, since 3×654046501645³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 654046501595 and 654046501604.

It is a congruent number.

It is an unprimeable number.

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, 65404650160 + ... + 65404650169.

It is an arithmetic number, because the mean of its divisors is an integer number (196213950495).

Almost surely, 2^654046501645 is an apocalyptic number.

It is an amenable number.

654046501645 is a deficient number, since it is larger than the sum of its proper divisors (130809300335).

654046501645 is a wasteful number, since it uses less digits than its factorization.

654046501645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130809300334.

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 654046501645 in words is "six hundred fifty-four billion, forty-six million, five hundred one thousand, six hundred forty-five".