20104151454487 has 2 divisors, whose sum is σ = 20104151454488. Its totient is φ = 20104151454486.

The previous prime is 20104151454349. The next prime is 20104151454503. The reversal of 20104151454487 is 78445415140102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20104151454487 - 2¹⁵ = 20104151421719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20104151454187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052075727243 + 10052075727244.

It is an arithmetic number, because the mean of its divisors is an integer number (10052075727244).

Almost surely, 2^{20104151454487} is an apocalyptic number.

20104151454487 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104151454487 is an equidigital number, since it uses as much as digits as its factorization.

20104151454487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 716800, while the sum is 46.

Adding to 20104151454487 its reverse (78445415140102), we get a palindrome (98549566594589).

The spelling of 20104151454487 in words is "twenty trillion, one hundred four billion, one hundred fifty-one million, four hundred fifty-four thousand, four hundred eighty-seven".