1722377077044 has 96 divisors (see below), whose sum is σ = 4458432026496. Its totient is φ = 514080483840.

The previous prime is 1722377077021. The next prime is 1722377077049. The reversal of 1722377077044 is 4407707732271.

It is a super-2 number, since 2×1722377077044² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722377077049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1459774 + ... + 2361290.

It is an arithmetic number, because the mean of its divisors is an integer number (46442000276).

Almost surely, 2^{1722377077044} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1722377077044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2229216013248).

1722377077044 is an abundant number, since it is smaller than the sum of its proper divisors (2736054949452).

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

1722377077044 is a wasteful number, since it uses less digits than its factorization.

1722377077044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901905 (or 901903 counting only the distinct ones).

The product of its (nonzero) digits is 3226944, while the sum is 51.

The spelling of 1722377077044 in words is "one trillion, seven hundred twenty-two billion, three hundred seventy-seven million, seventy-seven thousand, forty-four".