855469251541 has 2 divisors, whose sum is σ = 855469251542. Its totient is φ = 855469251540.

The previous prime is 855469251491. The next prime is 855469251587. The reversal of 855469251541 is 145152964558.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 647629000516 + 207840251025 = 804754^2 + 455895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855469251541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855469252541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427734625770 + 427734625771.

It is an arithmetic number, because the mean of its divisors is an integer number (427734625771).

Almost surely, 2^855469251541 is an apocalyptic number.

It is an amenable number.

855469251541 is a deficient number, since it is larger than the sum of its proper divisors (1).

855469251541 is an equidigital number, since it uses as much as digits as its factorization.

855469251541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640000, while the sum is 55.

The spelling of 855469251541 in words is "eight hundred fifty-five billion, four hundred sixty-nine million, two hundred fifty-one thousand, five hundred forty-one".