3493557724385 has 12 divisors (see below), whose sum is σ = 4297013663484. Its totient is φ = 2726679192960.

The previous prime is 3493557724379. The next prime is 3493557724457. The reversal of 3493557724385 is 5834277553943.

It can be written as a sum of positive squares in 6 ways, for example, as 317420686801 + 3176137037584 = 563401^2 + 1782172^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3493557724385 is a prime.

It is a super-2 number, since 2×3493557724385² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207817754 + ... + 207834563.

It is an arithmetic number, because the mean of its divisors is an integer number (358084471957).

Almost surely, 2^{3493557724385} is an apocalyptic number.

It is an amenable number.

3493557724385 is a deficient number, since it is larger than the sum of its proper divisors (803455939099).

3493557724385 is an equidigital number, since it uses as much as digits as its factorization.

3493557724385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415652404 (or 415652363 counting only the distinct ones).

The product of its digits is 381024000, while the sum is 65.

The spelling of 3493557724385 in words is "three trillion, four hundred ninety-three billion, five hundred fifty-seven million, seven hundred twenty-four thousand, three hundred eighty-five".