651261160441 has 4 divisors (see below), whose sum is σ = 651262776192. Its totient is φ = 651259544692.

The previous prime is 651261160369. The next prime is 651261160453. The reversal of 651261160441 is 144061162156.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 651261160441 - 2¹¹ = 651261158393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 651261160441.

It is not an unprimeable number, because it can be changed into a prime (651261110441) 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, 347796 + ... + 1193098.

It is an arithmetic number, because the mean of its divisors is an integer number (162815694048).

Almost surely, 2^651261160441 is an apocalyptic number.

It is an amenable number.

651261160441 is a deficient number, since it is larger than the sum of its proper divisors (1615751).

651261160441 is an equidigital number, since it uses as much as digits as its factorization.

651261160441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615750.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 651261160441 in words is "six hundred fifty-one billion, two hundred sixty-one million, one hundred sixty thousand, four hundred forty-one".