807781052831 has 2 divisors, whose sum is σ = 807781052832. Its totient is φ = 807781052830.

The previous prime is 807781052753. The next prime is 807781052851. The reversal of 807781052831 is 138250187708.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-807781052831 is a prime.

It is a super-2 number, since 2×807781052831² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 807781052831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (807781052851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403890526415 + 403890526416.

It is an arithmetic number, because the mean of its divisors is an integer number (403890526416).

Almost surely, 2^807781052831 is an apocalyptic number.

807781052831 is a deficient number, since it is larger than the sum of its proper divisors (1).

807781052831 is an equidigital number, since it uses as much as digits as its factorization.

807781052831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 752640, while the sum is 50.

The spelling of 807781052831 in words is "eight hundred seven billion, seven hundred eighty-one million, fifty-two thousand, eight hundred thirty-one".