1654062604561 has 4 divisors (see below), whose sum is σ = 1654065387072. Its totient is φ = 1654059822052.

The previous prime is 1654062604547. The next prime is 1654062604577.

1654062604561 is nontrivially palindromic in base 10.

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 1654062604561 - 2⁹ = 1654062604049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1654062601561) 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, 100261 + ... + 1821586.

It is an arithmetic number, because the mean of its divisors is an integer number (413516346768).

Almost surely, 2^{1654062604561} is an apocalyptic number.

It is an amenable number.

1654062604561 is a deficient number, since it is larger than the sum of its proper divisors (2782511).

1654062604561 is an equidigital number, since it uses as much as digits as its factorization.

1654062604561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782510.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 1654062604561 in words is "one trillion, six hundred fifty-four billion, sixty-two million, six hundred four thousand, five hundred sixty-one".