76015398661 has 2 divisors, whose sum is σ = 76015398662. Its totient is φ = 76015398660.

The previous prime is 76015398631. The next prime is 76015398671. The reversal of 76015398661 is 16689351067.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76013798436 + 1600225 = 275706^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 76015398661 - 2⁷ = 76015398533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76015398599 and 76015398608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76015398601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38007699330 + 38007699331.

It is an arithmetic number, because the mean of its divisors is an integer number (38007699331).

Almost surely, 2^76015398661 is an apocalyptic number.

It is an amenable number.

76015398661 is a deficient number, since it is larger than the sum of its proper divisors (1).

76015398661 is an equidigital number, since it uses as much as digits as its factorization.

76015398661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 76015398661 in words is "seventy-six billion, fifteen million, three hundred ninety-eight thousand, six hundred sixty-one".