654100361021 has 4 divisors (see below), whose sum is σ = 657200362944. Its totient is φ = 651000359100.

The previous prime is 654100361017. The next prime is 654100361039. The reversal of 654100361021 is 120163001456.

It is a happy number.

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 654100361021 - 2² = 654100361017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654100861021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1550000645 + ... + 1550001066.

It is an arithmetic number, because the mean of its divisors is an integer number (164300090736).

Almost surely, 2^654100361021 is an apocalyptic number.

It is an amenable number.

654100361021 is a deficient number, since it is larger than the sum of its proper divisors (3100001923).

654100361021 is a wasteful number, since it uses less digits than its factorization.

654100361021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100001922.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 654100361021 its reverse (120163001456), we get a palindrome (774263362477).

The spelling of 654100361021 in words is "six hundred fifty-four billion, one hundred million, three hundred sixty-one thousand, twenty-one".