654806847842855 has 4 divisors (see below), whose sum is σ = 785768217411432. Its totient is φ = 523845478274280.

The previous prime is 654806847842809. The next prime is 654806847842867. The reversal of 654806847842855 is 558248748608456.

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

It is not a de Polignac number, because 654806847842855 - 2³⁸ = 654531969935911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 654806847842855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65480684784281 + ... + 65480684784290.

It is an arithmetic number, because the mean of its divisors is an integer number (196442054352858).

Almost surely, 2^{654806847842855} is an apocalyptic number.

654806847842855 is a deficient number, since it is larger than the sum of its proper divisors (130961369568577).

654806847842855 is a wasteful number, since it uses less digits than its factorization.

654806847842855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130961369568576.

The product of its (nonzero) digits is 16515072000, while the sum is 80.

The spelling of 654806847842855 in words is "six hundred fifty-four trillion, eight hundred six billion, eight hundred forty-seven million, eight hundred forty-two thousand, eight hundred fifty-five".