1361264251511 has 2 divisors, whose sum is σ = 1361264251512. Its totient is φ = 1361264251510.

The previous prime is 1361264251489. The next prime is 1361264251667. The reversal of 1361264251511 is 1151524621631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1361264251511 - 2⁶ = 1361264251447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361264251211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680632125755 + 680632125756.

It is an arithmetic number, because the mean of its divisors is an integer number (680632125756).

Almost surely, 2^{1361264251511} is an apocalyptic number.

1361264251511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361264251511 is an equidigital number, since it uses as much as digits as its factorization.

1361264251511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The spelling of 1361264251511 in words is "one trillion, three hundred sixty-one billion, two hundred sixty-four million, two hundred fifty-one thousand, five hundred eleven".