1165488376553 has 2 divisors, whose sum is σ = 1165488376554. Its totient is φ = 1165488376552.

The previous prime is 1165488376543. The next prime is 1165488376597. The reversal of 1165488376553 is 3556738845611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 793831104784 + 371657271769 = 890972^2 + 609637^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165488376553 - 2¹² = 1165488372457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1165488376543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582744188276 + 582744188277.

It is an arithmetic number, because the mean of its divisors is an integer number (582744188277).

Almost surely, 2^{1165488376553} is an apocalyptic number.

It is an amenable number.

1165488376553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165488376553 is an equidigital number, since it uses as much as digits as its factorization.

1165488376553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576000, while the sum is 62.

The spelling of 1165488376553 in words is "one trillion, one hundred sixty-five billion, four hundred eighty-eight million, three hundred seventy-six thousand, five hundred fifty-three".