1021164962689 has 8 divisors (see below), whose sum is σ = 1081269130248. Its totient is φ = 961064755200.

The previous prime is 1021164962663. The next prime is 1021164962761. The reversal of 1021164962689 is 9862694611201.

It can be written as a sum of positive squares in 4 ways, for example, as 247630640625 + 773534322064 = 497625^2 + 879508^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021164962689 - 2⁷ = 1021164962561 is a prime.

It is a super-2 number, since 2×1021164962689² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021164902689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450712 + ... + 1498489.

It is an arithmetic number, because the mean of its divisors is an integer number (135158641281).

Almost surely, 2^{1021164962689} is an apocalyptic number.

It is an amenable number.

1021164962689 is a deficient number, since it is larger than the sum of its proper divisors (60104167559).

1021164962689 is a wasteful number, since it uses less digits than its factorization.

1021164962689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980035.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 1021164962689 in words is "one trillion, twenty-one billion, one hundred sixty-four million, nine hundred sixty-two thousand, six hundred eighty-nine".