20898993910 has 8 divisors (see below), whose sum is σ = 37618189056. Its totient is φ = 8359597560.

The previous prime is 20898993751. The next prime is 20898993967. The reversal of 20898993910 is 1939989802.

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

It is a congruent number.

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, 1044949686 + ... + 1044949705.

It is an arithmetic number, because the mean of its divisors is an integer number (4702273632).

Almost surely, 2^20898993910 is an apocalyptic number.

20898993910 is a deficient number, since it is larger than the sum of its proper divisors (16719195146).

20898993910 is a wasteful number, since it uses less digits than its factorization.

20898993910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089899398.

The product of its (nonzero) digits is 2519424, while the sum is 58.

It can be divided in two parts, 2089899 and 3910, that added together give a square (2093809 = 1447²).

The spelling of 20898993910 in words is "twenty billion, eight hundred ninety-eight million, nine hundred ninety-three thousand, nine hundred ten".