654331404561 has 8 divisors (see below), whose sum is σ = 872578666080. Its totient is φ = 436152539712.

The previous prime is 654331404547. The next prime is 654331404593. The reversal of 654331404561 is 165404133456.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 654331404561 - 2²⁹ = 653794533649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (654331404061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17076840 + ... + 17115113.

It is an arithmetic number, because the mean of its divisors is an integer number (109072333260).

Almost surely, 2^654331404561 is an apocalyptic number.

It is an amenable number.

654331404561 is a deficient number, since it is larger than the sum of its proper divisors (218247261519).

654331404561 is a wasteful number, since it uses less digits than its factorization.

654331404561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34198335.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 654331404561 in words is "six hundred fifty-four billion, three hundred thirty-one million, four hundred four thousand, five hundred sixty-one".