20473553077 has 2 divisors, whose sum is σ = 20473553078. Its totient is φ = 20473553076.

The previous prime is 20473553059. The next prime is 20473553117. The reversal of 20473553077 is 77035537402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16244522116 + 4229030961 = 127454^2 + 65031^2 .

It is a cyclic number.

It is not a de Polignac number, because 20473553077 - 2²⁷ = 20339335349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20473550077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10236776538 + 10236776539.

It is an arithmetic number, because the mean of its divisors is an integer number (10236776539).

Almost surely, 2^20473553077 is an apocalyptic number.

It is an amenable number.

20473553077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20473553077 is an equidigital number, since it uses as much as digits as its factorization.

20473553077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 617400, while the sum is 43.

The spelling of 20473553077 in words is "twenty billion, four hundred seventy-three million, five hundred fifty-three thousand, seventy-seven".