1071663208958 has 4 divisors (see below), whose sum is σ = 1607494813440. Its totient is φ = 535831604478.

The previous prime is 1071663208933. The next prime is 1071663208961. The reversal of 1071663208958 is 8598023661701.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1071663208958² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267915802238 + ... + 267915802241.

It is an arithmetic number, because the mean of its divisors is an integer number (401873703360).

Almost surely, 2^{1071663208958} is an apocalyptic number.

1071663208958 is a deficient number, since it is larger than the sum of its proper divisors (535831604482).

1071663208958 is an equidigital number, since it uses as much as digits as its factorization.

1071663208958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535831604481.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 1071663208958 in words is "one trillion, seventy-one billion, six hundred sixty-three million, two hundred eight thousand, nine hundred fifty-eight".