7690212209957 has 2 divisors, whose sum is σ = 7690212209958. Its totient is φ = 7690212209956.

The previous prime is 7690212209923. The next prime is 7690212210019. The reversal of 7690212209957 is 7599022120967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7273992397156 + 416219812801 = 2697034^2 + 645151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7690212209957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7690212209896 and 7690212209905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7690212203957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3845106104978 + 3845106104979.

It is an arithmetic number, because the mean of its divisors is an integer number (3845106104979).

Almost surely, 2^{7690212209957} is an apocalyptic number.

It is an amenable number.

7690212209957 is a deficient number, since it is larger than the sum of its proper divisors (1).

7690212209957 is an equidigital number, since it uses as much as digits as its factorization.

7690212209957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8573040, while the sum is 59.

The spelling of 7690212209957 in words is "seven trillion, six hundred ninety billion, two hundred twelve million, two hundred nine thousand, nine hundred fifty-seven".