61653204636523 has 2 divisors, whose sum is σ = 61653204636524. Its totient is φ = 61653204636522.

The previous prime is 61653204636497. The next prime is 61653204636547. The reversal of 61653204636523 is 32563640235616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61653204636523 - 2⁹ = 61653204636011 is a prime.

It is a super-2 number, since 2×61653204636523² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61653204636823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30826602318261 + 30826602318262.

It is an arithmetic number, because the mean of its divisors is an integer number (30826602318262).

Almost surely, 2^{61653204636523} is an apocalyptic number.

61653204636523 is a deficient number, since it is larger than the sum of its proper divisors (1).

61653204636523 is an equidigital number, since it uses as much as digits as its factorization.

61653204636523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13996800, while the sum is 52.

The spelling of 61653204636523 in words is "sixty-one trillion, six hundred fifty-three billion, two hundred four million, six hundred thirty-six thousand, five hundred twenty-three".