45257260261 has 2 divisors, whose sum is σ = 45257260262. Its totient is φ = 45257260260.

The previous prime is 45257260253. The next prime is 45257260303. The reversal of 45257260261 is 16206275254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41863615236 + 3393645025 = 204606^2 + 58255^2 .

It is a cyclic number.

It is not a de Polignac number, because 45257260261 - 2³ = 45257260253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45257260201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22628630130 + 22628630131.

It is an arithmetic number, because the mean of its divisors is an integer number (22628630131).

Almost surely, 2^45257260261 is an apocalyptic number.

It is an amenable number.

45257260261 is a deficient number, since it is larger than the sum of its proper divisors (1).

45257260261 is an equidigital number, since it uses as much as digits as its factorization.

45257260261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 45257260261 in words is "forty-five billion, two hundred fifty-seven million, two hundred sixty thousand, two hundred sixty-one".