44867878261 has 2 divisors, whose sum is σ = 44867878262. Its totient is φ = 44867878260.

The previous prime is 44867878259. The next prime is 44867878277. The reversal of 44867878261 is 16287876844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41560938225 + 3306940036 = 203865^2 + 57506^2 .

It is a cyclic number.

It is not a de Polignac number, because 44867878261 - 2¹ = 44867878259 is a prime.

Together with 44867878259, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 44867878261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44867878361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22433939130 + 22433939131.

It is an arithmetic number, because the mean of its divisors is an integer number (22433939131).

Almost surely, 2^44867878261 is an apocalyptic number.

It is an amenable number.

44867878261 is a deficient number, since it is larger than the sum of its proper divisors (1).

44867878261 is an equidigital number, since it uses as much as digits as its factorization.

44867878261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28901376, while the sum is 61.

The spelling of 44867878261 in words is "forty-four billion, eight hundred sixty-seven million, eight hundred seventy-eight thousand, two hundred sixty-one".