20908186070 has 32 divisors (see below), whose sum is σ = 39050430048. Its totient is φ = 8053337088.

The previous prime is 20908186067. The next prime is 20908186147. The reversal of 20908186070 is 7068180902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255392 + ... + 327171.

It is an arithmetic number, because the mean of its divisors is an integer number (1220325939).

Almost surely, 2^20908186070 is an apocalyptic number.

20908186070 is a deficient number, since it is larger than the sum of its proper divisors (18142243978).

20908186070 is a wasteful number, since it uses less digits than its factorization.

20908186070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582704.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 20908186070 in words is "twenty billion, nine hundred eight million, one hundred eighty-six thousand, seventy".