11311261651 has 2 divisors, whose sum is σ = 11311261652. Its totient is φ = 11311261650.

The previous prime is 11311261631. The next prime is 11311261669. The reversal of 11311261651 is 15616211311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11311261651 - 2⁹ = 11311261139 is a prime.

It is not a weakly prime, because it can be changed into another prime (11311261631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655630825 + 5655630826.

It is an arithmetic number, because the mean of its divisors is an integer number (5655630826).

Almost surely, 2^11311261651 is an apocalyptic number.

11311261651 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311261651 is an equidigital number, since it uses as much as digits as its factorization.

11311261651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 28.

Adding to 11311261651 its reverse (15616211311), we get a palindrome (26927472962).

The spelling of 11311261651 in words is "eleven billion, three hundred eleven million, two hundred sixty-one thousand, six hundred fifty-one".