811713501479 has 2 divisors, whose sum is σ = 811713501480. Its totient is φ = 811713501478.

The previous prime is 811713501449. The next prime is 811713501601. The reversal of 811713501479 is 974105317118.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 811713501479 - 2⁸ = 811713501223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (811713501449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405856750739 + 405856750740.

It is an arithmetic number, because the mean of its divisors is an integer number (405856750740).

Almost surely, 2^811713501479 is an apocalyptic number.

811713501479 is a deficient number, since it is larger than the sum of its proper divisors (1).

811713501479 is an equidigital number, since it uses as much as digits as its factorization.

811713501479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 47.

The spelling of 811713501479 in words is "eight hundred eleven billion, seven hundred thirteen million, five hundred one thousand, four hundred seventy-nine".