999860763331 has 2 divisors, whose sum is σ = 999860763332. Its totient is φ = 999860763330.

The previous prime is 999860763257. The next prime is 999860763347. The reversal of 999860763331 is 133367068999.

999860763331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999860763331 - 2⁹ = 999860762819 is a prime.

It is a super-2 number, since 2×999860763331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999860761331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499930381665 + 499930381666.

It is an arithmetic number, because the mean of its divisors is an integer number (499930381666).

Almost surely, 2^999860763331 is an apocalyptic number.

999860763331 is the 632412-nd centered pentagonal number.

999860763331 is a deficient number, since it is larger than the sum of its proper divisors (1).

999860763331 is an equidigital number, since it uses as much as digits as its factorization.

999860763331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39680928, while the sum is 64.

The spelling of 999860763331 in words is "nine hundred ninety-nine billion, eight hundred sixty million, seven hundred sixty-three thousand, three hundred thirty-one".