20255129983 has 4 divisors (see below), whose sum is σ = 22096505448. Its totient is φ = 18413754520.

The previous prime is 20255129977. The next prime is 20255130023. The reversal of 20255129983 is 38992155202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20255129983 - 2²¹ = 20253032831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255120983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920687716 + ... + 920687737.

It is an arithmetic number, because the mean of its divisors is an integer number (5524126362).

Almost surely, 2^20255129983 is an apocalyptic number.

20255129983 is a deficient number, since it is larger than the sum of its proper divisors (1841375465).

20255129983 is a wasteful number, since it uses less digits than its factorization.

20255129983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841375464.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 20255129983 in words is "twenty billion, two hundred fifty-five million, one hundred twenty-nine thousand, nine hundred eighty-three".