403545554215381 has 2 divisors, whose sum is σ = 403545554215382. Its totient is φ = 403545554215380.

The previous prime is 403545554215379. The next prime is 403545554215421. The reversal of 403545554215381 is 183512455545304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337798852283025 + 65746701932356 = 18379305^2 + 8108434^2 .

It is a cyclic number.

It is not a de Polignac number, because 403545554215381 - 2¹ = 403545554215379 is a prime.

It is a super-2 number, since 2×403545554215381² (a number of 30 digits) contains 22 as substring.

Together with 403545554215379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403545554215361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201772777107690 + 201772777107691.

It is an arithmetic number, because the mean of its divisors is an integer number (201772777107691).

Almost surely, 2^{403545554215381} is an apocalyptic number.

It is an amenable number.

403545554215381 is a deficient number, since it is larger than the sum of its proper divisors (1).

403545554215381 is an equidigital number, since it uses as much as digits as its factorization.

403545554215381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800000, while the sum is 55.

The spelling of 403545554215381 in words is "four hundred three trillion, five hundred forty-five billion, five hundred fifty-four million, two hundred fifteen thousand, three hundred eighty-one".