20672055998 has 24 divisors (see below), whose sum is σ = 36088171056. Its totient is φ = 8843658560.

The previous prime is 20672055959. The next prime is 20672056021. The reversal of 20672055998 is 89955027602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2508290 + ... + 2516517.

It is an arithmetic number, because the mean of its divisors is an integer number (1503673794).

Almost surely, 2^20672055998 is an apocalyptic number.

20672055998 is a deficient number, since it is larger than the sum of its proper divisors (15416115058).

20672055998 is a wasteful number, since it uses less digits than its factorization.

20672055998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024848 (or 5024837 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 20672055998 in words is "twenty billion, six hundred seventy-two million, fifty-five thousand, nine hundred ninety-eight".