18955497355463 has 2 divisors, whose sum is σ = 18955497355464. Its totient is φ = 18955497355462.

The previous prime is 18955497355441. The next prime is 18955497355477. The reversal of 18955497355463 is 36455379455981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18955497355463 - 2¹⁰ = 18955497354439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18955497355423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9477748677731 + 9477748677732.

It is an arithmetic number, because the mean of its divisors is an integer number (9477748677732).

Almost surely, 2^{18955497355463} is an apocalyptic number.

18955497355463 is a deficient number, since it is larger than the sum of its proper divisors (1).

18955497355463 is an equidigital number, since it uses as much as digits as its factorization.

18955497355463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440000, while the sum is 74.

The spelling of 18955497355463 in words is "eighteen trillion, nine hundred fifty-five billion, four hundred ninety-seven million, three hundred fifty-five thousand, four hundred sixty-three".