887361640816213 has 2 divisors, whose sum is σ = 887361640816214. Its totient is φ = 887361640816212.

The previous prime is 887361640816193. The next prime is 887361640816241. The reversal of 887361640816213 is 312618046163788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 885219170432689 + 2142470383524 = 29752633^2 + 1463718^2 .

It is a cyclic number.

It is not a de Polignac number, because 887361640816213 - 2⁵ = 887361640816181 is a prime.

It is a super-2 number, since 2×887361640816213² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (887361640817213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 443680820408106 + 443680820408107.

It is an arithmetic number, because the mean of its divisors is an integer number (443680820408107).

Almost surely, 2^{887361640816213} is an apocalyptic number.

It is an amenable number.

887361640816213 is a deficient number, since it is larger than the sum of its proper divisors (1).

887361640816213 is an equidigital number, since it uses as much as digits as its factorization.

887361640816213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55738368, while the sum is 64.

The spelling of 887361640816213 in words is "eight hundred eighty-seven trillion, three hundred sixty-one billion, six hundred forty million, eight hundred sixteen thousand, two hundred thirteen".