1720834056492 has 12 divisors (see below), whose sum is σ = 4015279465176. Its totient is φ = 573611352160.

The previous prime is 1720834056463. The next prime is 1720834056493. The reversal of 1720834056492 is 2946504380271.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1720834056492² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1720834056493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71701419009 + ... + 71701419032.

It is an arithmetic number, because the mean of its divisors is an integer number (334606622098).

It is a 1-persistent number, because it is pandigital, but 2⋅1720834056492 = 3441668112984 is not.

Almost surely, 2^{1720834056492} is an apocalyptic number.

1720834056492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1720834056492 is an abundant number, since it is smaller than the sum of its proper divisors (2294445408684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1720834056492 is a wasteful number, since it uses less digits than its factorization.

1720834056492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143402838048 (or 143402838046 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 1720834056492 in words is "one trillion, seven hundred twenty billion, eight hundred thirty-four million, fifty-six thousand, four hundred ninety-two".