1721540414053 has 2 divisors, whose sum is σ = 1721540414054. Its totient is φ = 1721540414052.

The previous prime is 1721540414039. The next prime is 1721540414101. The reversal of 1721540414053 is 3504140451271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1689214891204 + 32325522849 = 1299698^2 + 179793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1721540414053 - 2¹³ = 1721540405861 is a prime.

It is a super-3 number, since 3×1721540414053³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1721546414053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860770207026 + 860770207027.

It is an arithmetic number, because the mean of its divisors is an integer number (860770207027).

Almost surely, 2^{1721540414053} is an apocalyptic number.

It is an amenable number.

1721540414053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1721540414053 is an equidigital number, since it uses as much as digits as its factorization.

1721540414053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 1721540414053 in words is "one trillion, seven hundred twenty-one billion, five hundred forty million, four hundred fourteen thousand, fifty-three".