10627447991989 has 2 divisors, whose sum is σ = 10627447991990. Its totient is φ = 10627447991988.

The previous prime is 10627447991987. The next prime is 10627447991999. The reversal of 10627447991989 is 98919974472601.

10627447991989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6162433880625 + 4465014111364 = 2482425^2 + 2113058^2 .

It is a cyclic number.

It is not a de Polignac number, because 10627447991989 - 2¹ = 10627447991987 is a prime.

It is a super-2 number, since 2×10627447991989² (a number of 27 digits) contains 22 as substring.

Together with 10627447991987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10627447991983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5313723995994 + 5313723995995.

It is an arithmetic number, because the mean of its divisors is an integer number (5313723995995).

Almost surely, 2^{10627447991989} is an apocalyptic number.

It is an amenable number.

10627447991989 is a deficient number, since it is larger than the sum of its proper divisors (1).

10627447991989 is an equidigital number, since it uses as much as digits as its factorization.

10627447991989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 493807104, while the sum is 76.

The spelling of 10627447991989 in words is "ten trillion, six hundred twenty-seven billion, four hundred forty-seven million, nine hundred ninety-one thousand, nine hundred eighty-nine".