20552665783 has 12 divisors (see below), whose sum is σ = 22311384888. Its totient is φ = 18923842080.

The previous prime is 20552665751. The next prime is 20552665799. The reversal of 20552665783 is 38756625502.

It is not a de Polignac number, because 20552665783 - 2⁵ = 20552665751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552665733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86073 + ... + 220258.

It is an arithmetic number, because the mean of its divisors is an integer number (1859282074).

Almost surely, 2^20552665783 is an apocalyptic number.

20552665783 is a deficient number, since it is larger than the sum of its proper divisors (1758719105).

20552665783 is a wasteful number, since it uses less digits than its factorization.

20552665783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306754 (or 306741 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 20552665783 in words is "twenty billion, five hundred fifty-two million, six hundred sixty-five thousand, seven hundred eighty-three".