20255417983 has 2 divisors, whose sum is σ = 20255417984. Its totient is φ = 20255417982.

The previous prime is 20255417969. The next prime is 20255418037. The reversal of 20255417983 is 38971455202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20255417983 - 2²¹ = 20253320831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20255417953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10127708991 + 10127708992.

It is an arithmetic number, because the mean of its divisors is an integer number (10127708992).

Almost surely, 2^20255417983 is an apocalyptic number.

20255417983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20255417983 is an equidigital number, since it uses as much as digits as its factorization.

20255417983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 20255417983 in words is "twenty billion, two hundred fifty-five million, four hundred seventeen thousand, nine hundred eighty-three".