693868132457 has 2 divisors, whose sum is σ = 693868132458. Its totient is φ = 693868132456.

The previous prime is 693868132427. The next prime is 693868132487. The reversal of 693868132457 is 754231868396.

It is a balanced prime because it is at equal distance from previous prime (693868132427) and next prime (693868132487).

It can be written as a sum of positive squares in only one way, i.e., 691851314176 + 2016818281 = 831776^2 + 44909^2 .

It is a cyclic number.

It is not a de Polignac number, because 693868132457 - 2¹⁶ = 693868066921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 693868132457.

It is not a weakly prime, because it can be changed into another prime (693868132427) 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, 346934066228 + 346934066229.

It is an arithmetic number, because the mean of its divisors is an integer number (346934066229).

Almost surely, 2^693868132457 is an apocalyptic number.

It is an amenable number.

693868132457 is a deficient number, since it is larger than the sum of its proper divisors (1).

693868132457 is an equidigital number, since it uses as much as digits as its factorization.

693868132457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 62.

The spelling of 693868132457 in words is "six hundred ninety-three billion, eight hundred sixty-eight million, one hundred thirty-two thousand, four hundred fifty-seven".