7346515681 has 2 divisors, whose sum is σ = 7346515682. Its totient is φ = 7346515680.

The previous prime is 7346515633. The next prime is 7346515747. The reversal of 7346515681 is 1865156437.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6147971281 + 1198544400 = 78409^2 + 34620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7346515681 is a prime.

It is a super-2 number, since 2×7346515681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7346515081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3673257840 + 3673257841.

It is an arithmetic number, because the mean of its divisors is an integer number (3673257841).

Almost surely, 2^7346515681 is an apocalyptic number.

It is an amenable number.

7346515681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7346515681 is an equidigital number, since it uses as much as digits as its factorization.

7346515681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 46.

The square root of 7346515681 is about 85711.8176274427. The cubic root of 7346515681 is about 1943.9890006864.

The spelling of 7346515681 in words is "seven billion, three hundred forty-six million, five hundred fifteen thousand, six hundred eighty-one".