3450215272781 has 2 divisors, whose sum is σ = 3450215272782. Its totient is φ = 3450215272780.

The previous prime is 3450215272739. The next prime is 3450215272853. The reversal of 3450215272781 is 1872725120543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3443655892681 + 6559380100 = 1855709^2 + 80990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3450215272781 is a prime.

It is a super-2 number, since 2×3450215272781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3450215872781) 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, 1725107636390 + 1725107636391.

It is an arithmetic number, because the mean of its divisors is an integer number (1725107636391).

Almost surely, 2^{3450215272781} is an apocalyptic number.

It is an amenable number.

3450215272781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3450215272781 is an equidigital number, since it uses as much as digits as its factorization.

3450215272781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 3450215272781 in words is "three trillion, four hundred fifty billion, two hundred fifteen million, two hundred seventy-two thousand, seven hundred eighty-one".