654623455441 has 4 divisors (see below), whose sum is σ = 683085344832. Its totient is φ = 626161566052.

The previous prime is 654623455399. The next prime is 654623455471. The reversal of 654623455441 is 144554326456.

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 654623455441 - 2¹⁹ = 654622931153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654623455471) 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, 14230944661 + ... + 14230944706.

It is an arithmetic number, because the mean of its divisors is an integer number (170771336208).

Almost surely, 2^654623455441 is an apocalyptic number.

It is an amenable number.

654623455441 is a deficient number, since it is larger than the sum of its proper divisors (28461889391).

654623455441 is a wasteful number, since it uses less digits than its factorization.

654623455441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28461889390.

The product of its digits is 6912000, while the sum is 49.

The spelling of 654623455441 in words is "six hundred fifty-four billion, six hundred twenty-three million, four hundred fifty-five thousand, four hundred forty-one".