15655561060553 has 2 divisors, whose sum is σ = 15655561060554. Its totient is φ = 15655561060552.

The previous prime is 15655561060547. The next prime is 15655561060589. The reversal of 15655561060553 is 35506016555651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13611613329664 + 2043947730889 = 3689392^2 + 1429667^2 .

It is an emirp because it is prime and its reverse (35506016555651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15655561060553 - 2¹⁶ = 15655560995017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15655561060495 and 15655561060504.

It is not a weakly prime, because it can be changed into another prime (15655561060253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7827780530276 + 7827780530277.

It is an arithmetic number, because the mean of its divisors is an integer number (7827780530277).

Almost surely, 2^{15655561060553} is an apocalyptic number.

It is an amenable number.

15655561060553 is a deficient number, since it is larger than the sum of its proper divisors (1).

15655561060553 is an equidigital number, since it uses as much as digits as its factorization.

15655561060553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10125000, while the sum is 53.

The spelling of 15655561060553 in words is "fifteen trillion, six hundred fifty-five billion, five hundred sixty-one million, sixty thousand, five hundred fifty-three".