20871084602378 has 8 divisors (see below), whose sum is σ = 31307812076772. Its totient is φ = 10435147243456.

The previous prime is 20871084602363. The next prime is 20871084602419. The reversal of 20871084602378 is 87320648017802.

It can be written as a sum of positive squares in 2 ways, for example, as 20534646321289 + 336438281089 = 4531517^2 + 580033^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197462825 + ... + 197568492.

Almost surely, 2^{20871084602378} is an apocalyptic number.

20871084602378 is a deficient number, since it is larger than the sum of its proper divisors (10436727474394).

20871084602378 is a wasteful number, since it uses less digits than its factorization.

20871084602378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395057736.

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 20871084602378 in words is "twenty trillion, eight hundred seventy-one billion, eighty-four million, six hundred two thousand, three hundred seventy-eight".