7020117253661 has 2 divisors, whose sum is σ = 7020117253662. Its totient is φ = 7020117253660.

The previous prime is 7020117253651. The next prime is 7020117253691. The reversal of 7020117253661 is 1663527110207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5711770184761 + 1308347068900 = 2389931^2 + 1143830^2 .

It is an emirp because it is prime and its reverse (1663527110207) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7020117253661 is a prime.

It is a super-2 number, since 2×7020117253661² (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 (7020117253621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3510058626830 + 3510058626831.

It is an arithmetic number, because the mean of its divisors is an integer number (3510058626831).

Almost surely, 2^{7020117253661} is an apocalyptic number.

It is an amenable number.

7020117253661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7020117253661 is an equidigital number, since it uses as much as digits as its factorization.

7020117253661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 7020117253661 in words is "seven trillion, twenty billion, one hundred seventeen million, two hundred fifty-three thousand, six hundred sixty-one".