1164526356661 has 2 divisors, whose sum is σ = 1164526356662. Its totient is φ = 1164526356660.

The previous prime is 1164526356619. The next prime is 1164526356673. The reversal of 1164526356661 is 1666536254611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 804754320561 + 359772036100 = 897081^2 + 599810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1164526356661 - 2²⁹ = 1163989485749 is a prime.

It is a super-2 number, since 2×1164526356661² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1164526356599 and 1164526356608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1164526356361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582263178330 + 582263178331.

It is an arithmetic number, because the mean of its divisors is an integer number (582263178331).

Almost surely, 2^{1164526356661} is an apocalyptic number.

It is an amenable number.

1164526356661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1164526356661 is an equidigital number, since it uses as much as digits as its factorization.

1164526356661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 52.

The spelling of 1164526356661 in words is "one trillion, one hundred sixty-four billion, five hundred twenty-six million, three hundred fifty-six thousand, six hundred sixty-one".