40453435261 has 2 divisors, whose sum is σ = 40453435262. Its totient is φ = 40453435260.

The previous prime is 40453435259. The next prime is 40453435271. The reversal of 40453435261 is 16253435404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39493612900 + 959822361 = 198730^2 + 30981^2 .

It is a cyclic number.

It is not a de Polignac number, because 40453435261 - 2¹ = 40453435259 is a prime.

Together with 40453435259, 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 40453435261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40453435271) 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 as a sum of consecutive naturals, namely, 20226717630 + 20226717631.

It is an arithmetic number, because the mean of its divisors is an integer number (20226717631).

Almost surely, 2^40453435261 is an apocalyptic number.

It is an amenable number.

40453435261 is a deficient number, since it is larger than the sum of its proper divisors (1).

40453435261 is an equidigital number, since it uses as much as digits as its factorization.

40453435261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 40453435261 in words is "forty billion, four hundred fifty-three million, four hundred thirty-five thousand, two hundred sixty-one".