653428738637 has 2 divisors, whose sum is σ = 653428738638. Its totient is φ = 653428738636.

The previous prime is 653428738621. The next prime is 653428738649. The reversal of 653428738637 is 736837824356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498251045161 + 155177693476 = 705869^2 + 393926^2 .

It is a cyclic number.

It is not a de Polignac number, because 653428738637 - 2⁴ = 653428738621 is a prime.

It is a super-3 number, since 3×653428738637³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 653428738637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653428738607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326714369318 + 326714369319.

It is an arithmetic number, because the mean of its divisors is an integer number (326714369319).

Almost surely, 2^653428738637 is an apocalyptic number.

It is an amenable number.

653428738637 is a deficient number, since it is larger than the sum of its proper divisors (1).

653428738637 is an equidigital number, since it uses as much as digits as its factorization.

653428738637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121927680, while the sum is 62.

The spelling of 653428738637 in words is "six hundred fifty-three billion, four hundred twenty-eight million, seven hundred thirty-eight thousand, six hundred thirty-seven".