651146522041 has 4 divisors (see below), whose sum is σ = 651149968500. Its totient is φ = 651143075584.

The previous prime is 651146522017. The next prime is 651146522093. The reversal of 651146522041 is 140225641156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2549846016 + 648596676025 = 50496^2 + 805355^2 .

It is a cyclic number.

It is not a de Polignac number, because 651146522041 - 2³¹ = 648999038393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (651156522041) 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, 1422316 + ... + 1823533.

It is an arithmetic number, because the mean of its divisors is an integer number (162787492125).

Almost surely, 2^651146522041 is an apocalyptic number.

It is an amenable number.

651146522041 is a deficient number, since it is larger than the sum of its proper divisors (3446459).

651146522041 is a wasteful number, since it uses less digits than its factorization.

651146522041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446458.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 651146522041 in words is "six hundred fifty-one billion, one hundred forty-six million, five hundred twenty-two thousand, forty-one".