1022645620499 has 4 divisors (see below), whose sum is σ = 1022664249864. Its totient is φ = 1022626991136.

The previous prime is 1022645620481. The next prime is 1022645620519. The reversal of 1022645620499 is 9940265462201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022645620499 is a prime.

It is a super-3 number, since 3×1022645620499³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022645620429) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 9232097 + ... + 9342210.

It is an arithmetic number, because the mean of its divisors is an integer number (255666062466).

Almost surely, 2^{1022645620499} is an apocalyptic number.

1022645620499 is a deficient number, since it is larger than the sum of its proper divisors (18629365).

1022645620499 is an equidigital number, since it uses as much as digits as its factorization.

1022645620499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18629364.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 1022645620499 in words is "one trillion, twenty-two billion, six hundred forty-five million, six hundred twenty thousand, four hundred ninety-nine".