1720834056894 has 16 divisors (see below), whose sum is σ = 3449507909760. Its totient is φ = 572304719640.

The previous prime is 1720834056749. The next prime is 1720834056901. The reversal of 1720834056894 is 4986504380271.

It is a happy number.

It is a super-2 number, since 2×1720834056894² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326655312 + ... + 326660579.

It is an arithmetic number, because the mean of its divisors is an integer number (215594244360).

It is a 1-persistent number, because it is pandigital, but 2⋅1720834056894 = 3441668113788 is not.

Almost surely, 2^{1720834056894} is an apocalyptic number.

1720834056894 is an abundant number, since it is smaller than the sum of its proper divisors (1728673852866).

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

1720834056894 is a wasteful number, since it uses less digits than its factorization.

1720834056894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653316335.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 1720834056894 in words is "one trillion, seven hundred twenty billion, eight hundred thirty-four million, fifty-six thousand, eight hundred ninety-four".