1722504474561 has 24 divisors (see below), whose sum is σ = 2487718109856. Its totient is φ = 1059666641280.

The previous prime is 1722504474553. The next prime is 1722504474599. The reversal of 1722504474561 is 1654744052271.

It is not a de Polignac number, because 1722504474561 - 2³ = 1722504474553 is a prime.

It is a super-2 number, since 2×1722504474561² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1722504474561.

It is not an unprimeable number, because it can be changed into a prime (1722504374561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1066581 + ... + 2140701.

It is an arithmetic number, because the mean of its divisors is an integer number (103654921244).

Almost surely, 2^{1722504474561} is an apocalyptic number.

It is an amenable number.

1722504474561 is a deficient number, since it is larger than the sum of its proper divisors (765213635295).

1722504474561 is a wasteful number, since it uses less digits than its factorization.

1722504474561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077313 (or 1077300 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 48.

The spelling of 1722504474561 in words is "one trillion, seven hundred twenty-two billion, five hundred four million, four hundred seventy-four thousand, five hundred sixty-one".