1056660023261 has 8 divisors (see below), whose sum is σ = 1062776542464. Its totient is φ = 1050546566160.

The previous prime is 1056660023239. The next prime is 1056660023323. The reversal of 1056660023261 is 1623200666501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1056660023261 - 2¹⁴ = 1056660006877 is a prime.

It is a super-2 number, since 2×1056660023261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056660023761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71561 + ... + 1455486.

It is an arithmetic number, because the mean of its divisors is an integer number (132847067808).

Almost surely, 2^{1056660023261} is an apocalyptic number.

It is an amenable number.

1056660023261 is a deficient number, since it is larger than the sum of its proper divisors (6116519203).

1056660023261 is a wasteful number, since it uses less digits than its factorization.

1056660023261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531051.

The product of its (nonzero) digits is 77760, while the sum is 38.

Adding to 1056660023261 its reverse (1623200666501), we get a palindrome (2679860689762).

The spelling of 1056660023261 in words is "one trillion, fifty-six billion, six hundred sixty million, twenty-three thousand, two hundred sixty-one".