1310010277561 has 2 divisors, whose sum is σ = 1310010277562. Its totient is φ = 1310010277560.

The previous prime is 1310010277553. The next prime is 1310010277567. The reversal of 1310010277561 is 1657720100131.

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., 724999457961 + 585010819600 = 851469^2 + 764860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310010277561 - 2³ = 1310010277553 is a prime.

It is a super-2 number, since 2×1310010277561² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1310010277567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655005138780 + 655005138781.

It is an arithmetic number, because the mean of its divisors is an integer number (655005138781).

Almost surely, 2^{1310010277561} is an apocalyptic number.

It is an amenable number.

1310010277561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310010277561 is an equidigital number, since it uses as much as digits as its factorization.

1310010277561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 34.

Adding to 1310010277561 its reverse (1657720100131), we get a palindrome (2967730377692).

The spelling of 1310010277561 in words is "one trillion, three hundred ten billion, ten million, two hundred seventy-seven thousand, five hundred sixty-one".