20587982053 has 2 divisors, whose sum is σ = 20587982054. Its totient is φ = 20587982052.

The previous prime is 20587982033. The next prime is 20587982101. The reversal of 20587982053 is 35028978502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16011865444 + 4576116609 = 126538^2 + 67647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20587982053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20587981988 and 20587982006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20587982033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10293991026 + 10293991027.

It is an arithmetic number, because the mean of its divisors is an integer number (10293991027).

Almost surely, 2^20587982053 is an apocalyptic number.

It is an amenable number.

20587982053 is a deficient number, since it is larger than the sum of its proper divisors (1).

20587982053 is an equidigital number, since it uses as much as digits as its factorization.

20587982053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 20587982053 in words is "twenty billion, five hundred eighty-seven million, nine hundred eighty-two thousand, fifty-three".