20628943118 has 32 divisors (see below), whose sum is σ = 36515543040. Its totient is φ = 8553235680.

The previous prime is 20628943051. The next prime is 20628943123. The reversal of 20628943118 is 81134982602.

It is a happy number.

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, 2375288 + ... + 2383956.

It is an arithmetic number, because the mean of its divisors is an integer number (1141110720).

Almost surely, 2^20628943118 is an apocalyptic number.

20628943118 is a deficient number, since it is larger than the sum of its proper divisors (15886599922).

20628943118 is a wasteful number, since it uses less digits than its factorization.

20628943118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14192.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 20628943118 in words is "twenty billion, six hundred twenty-eight million, nine hundred forty-three thousand, one hundred eighteen".