653487021272077 has 2 divisors, whose sum is σ = 653487021272078. Its totient is φ = 653487021272076.

The previous prime is 653487021272069. The next prime is 653487021272083. The reversal of 653487021272077 is 770272120784356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 647474182724196 + 6012838547881 = 25445514^2 + 2452109^2 .

It is a cyclic number.

It is not a de Polignac number, because 653487021272077 - 2³ = 653487021272069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653487021672077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326743510636038 + 326743510636039.

It is an arithmetic number, because the mean of its divisors is an integer number (326743510636039).

Almost surely, 2^{653487021272077} is an apocalyptic number.

It is an amenable number.

653487021272077 is a deficient number, since it is larger than the sum of its proper divisors (1).

653487021272077 is an equidigital number, since it uses as much as digits as its factorization.

653487021272077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55319040, while the sum is 61.

The spelling of 653487021272077 in words is "six hundred fifty-three trillion, four hundred eighty-seven billion, twenty-one million, two hundred seventy-two thousand, seventy-seven".