1721411355552 has 48 divisors (see below), whose sum is σ = 5164234068672. Its totient is φ = 491831815680.

The previous prime is 1721411355541. The next prime is 1721411355553. The reversal of 1721411355552 is 2555531141271.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1721411355552² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1721411355553) 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, 1280811349 + ... + 1280812692.

It is an arithmetic number, because the mean of its divisors is an integer number (107588209764).

Almost surely, 2^{1721411355552} is an apocalyptic number.

1721411355552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1721411355552 is an abundant number, since it is smaller than the sum of its proper divisors (3442822713120).

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

1721411355552 is a wasteful number, since it uses less digits than its factorization.

1721411355552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561624061 (or 2561624053 counting only the distinct ones).

The product of its digits is 210000, while the sum is 42.

The spelling of 1721411355552 in words is "one trillion, seven hundred twenty-one billion, four hundred eleven million, three hundred fifty-five thousand, five hundred fifty-two".