1617764198423 has 8 divisors (see below), whose sum is σ = 1627496521728. Its totient is φ = 1608032412504.

The previous prime is 1617764198327. The next prime is 1617764198431. The reversal of 1617764198423 is 3248914677161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1617764198423 is a prime.

It is a super-2 number, since 2×1617764198423² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1617764198483) 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, 7058690 + ... + 7284272.

It is an arithmetic number, because the mean of its divisors is an integer number (203437065216).

Almost surely, 2^{1617764198423} is an apocalyptic number.

1617764198423 is a deficient number, since it is larger than the sum of its proper divisors (9732323305).

1617764198423 is a wasteful number, since it uses less digits than its factorization.

1617764198423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268693.

The product of its digits is 12192768, while the sum is 59.

The spelling of 1617764198423 in words is "one trillion, six hundred seventeen billion, seven hundred sixty-four million, one hundred ninety-eight thousand, four hundred twenty-three".