1721456361141 has 16 divisors (see below), whose sum is σ = 2518930165248. Its totient is φ = 1037059535600.

The previous prime is 1721456361019. The next prime is 1721456361187. The reversal of 1721456361141 is 1411636541271.

It is not a de Polignac number, because 1721456361141 - 2²⁹ = 1720919490229 is a prime.

It is a super-3 number, since 3×1721456361141³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1721456361093 and 1721456361102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1721454361141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156178155 + ... + 156189176.

It is an arithmetic number, because the mean of its divisors is an integer number (157433135328).

Almost surely, 2^{1721456361141} is an apocalyptic number.

1721456361141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1721456361141 is a deficient number, since it is larger than the sum of its proper divisors (797473804107).

1721456361141 is a wasteful number, since it uses less digits than its factorization.

1721456361141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312367512.

The product of its digits is 120960, while the sum is 42.

The spelling of 1721456361141 in words is "one trillion, seven hundred twenty-one billion, four hundred fifty-six million, three hundred sixty-one thousand, one hundred forty-one".