654534213565649 has 4 divisors (see below), whose sum is σ = 682992222851136. Its totient is φ = 626076204280164.

The previous prime is 654534213565621. The next prime is 654534213565663. The reversal of 654534213565649 is 946565312435456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 654534213565649 - 2¹⁶ = 654534213500113 is a prime.

It is a super-3 number, since 3×654534213565649³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654534213565619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14229004642709 + ... + 14229004642754.

It is an arithmetic number, because the mean of its divisors is an integer number (170748055712784).

Almost surely, 2^{654534213565649} is an apocalyptic number.

It is an amenable number.

654534213565649 is a deficient number, since it is larger than the sum of its proper divisors (28458009285487).

654534213565649 is a wasteful number, since it uses less digits than its factorization.

654534213565649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28458009285486.

The product of its digits is 1399680000, while the sum is 68.

The spelling of 654534213565649 in words is "six hundred fifty-four trillion, five hundred thirty-four billion, two hundred thirteen million, five hundred sixty-five thousand, six hundred forty-nine".