7097028396561 has 6 divisors (see below), whose sum is σ = 10251263239490. Its totient is φ = 4731352264368.

The previous prime is 7097028396541. The next prime is 7097028396571. The reversal of 7097028396561 is 1656938207907.

It can be written as a sum of positive squares in only one way, i.e., 5344793758161 + 1752234638400 = 2311881^2 + 1323720^2 .

It is not a de Polignac number, because 7097028396561 - 2³³ = 7088438461969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7097028396541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 394279355356 + ... + 394279355373.

Almost surely, 2^{7097028396561} is an apocalyptic number.

It is an amenable number.

7097028396561 is a deficient number, since it is larger than the sum of its proper divisors (3154234842929).

7097028396561 is a wasteful number, since it uses less digits than its factorization.

7097028396561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788558710735 (or 788558710732 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 63.

The spelling of 7097028396561 in words is "seven trillion, ninety-seven billion, twenty-eight million, three hundred ninety-six thousand, five hundred sixty-one".