20000689857215 has 8 divisors (see below), whose sum is σ = 24000883251408. Its totient is φ = 16000514937280.

The previous prime is 20000689857179. The next prime is 20000689857259. The reversal of 20000689857215 is 51275898600002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20000689857215 - 2²⁸ = 20000421421759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2113241 + ... + 6668370.

It is an arithmetic number, because the mean of its divisors is an integer number (3000110406426).

Almost surely, 2^{20000689857215} is an apocalyptic number.

20000689857215 is a deficient number, since it is larger than the sum of its proper divisors (4000193394193).

20000689857215 is an equidigital number, since it uses as much as digits as its factorization.

20000689857215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9237129.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 20000689857215 in words is "twenty trillion, six hundred eighty-nine million, eight hundred fifty-seven thousand, two hundred fifteen".