20958587414959 has 2 divisors, whose sum is σ = 20958587414960. Its totient is φ = 20958587414958.

The previous prime is 20958587414951. The next prime is 20958587415037. The reversal of 20958587414959 is 95941478585902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20958587414959 - 2³ = 20958587414951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20958587414951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10479293707479 + 10479293707480.

It is an arithmetic number, because the mean of its divisors is an integer number (10479293707480).

Almost surely, 2^{20958587414959} is an apocalyptic number.

20958587414959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20958587414959 is an equidigital number, since it uses as much as digits as its factorization.

20958587414959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368000, while the sum is 76.

The spelling of 20958587414959 in words is "twenty trillion, nine hundred fifty-eight billion, five hundred eighty-seven million, four hundred fourteen thousand, nine hundred fifty-nine".