20884180364870 has 16 divisors (see below), whose sum is σ = 37693953885888. Its totient is φ = 8330910095040.

The previous prime is 20884180364863. The next prime is 20884180364903. The reversal of 20884180364870 is 7846308148802.

It is a super-2 number, since 2×20884180364870² (a number of 27 digits) contains 22 as substring.

It is a Curzon 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, 2845252511 + ... + 2845259850.

It is an arithmetic number, because the mean of its divisors is an integer number (2355872117868).

Almost surely, 2^{20884180364870} is an apocalyptic number.

20884180364870 is a deficient number, since it is larger than the sum of its proper divisors (16809773521018).

20884180364870 is a wasteful number, since it uses less digits than its factorization.

20884180364870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690512735.

The product of its (nonzero) digits is 16515072, while the sum is 59.

The spelling of 20884180364870 in words is "twenty trillion, eight hundred eighty-four billion, one hundred eighty million, three hundred sixty-four thousand, eight hundred seventy".