7051409391601 has 3 divisors (see below), whose sum is σ = 7051412047051. Its totient is φ = 7051406736152.

The previous prime is 7051409391569. The next prime is 7051409391643. The reversal of 7051409391601 is 1061939041507.

The square root of 7051409391601 is 2655449.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 3559444449201 + 3491964942400 = 1886649^2 + 1868680^2 .

It is not a de Polignac number, because 7051409391601 - 2⁵ = 7051409391569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7051409395601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1327725 + ... + 3983173.

Almost surely, 2^{7051409391601} is an apocalyptic number.

7051409391601 is the 2655449-th square number.

7051409391601 is the 1327725-th centered octagonal number.

It is an amenable number.

7051409391601 is a deficient number, since it is larger than the sum of its proper divisors (2655450).

7051409391601 is an frugal number, since it uses more digits than its factorization.

7051409391601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310898 (or 2655449 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 7051409391601 in words is "seven trillion, fifty-one billion, four hundred nine million, three hundred ninety-one thousand, six hundred one".