76503351202661 has 2 divisors, whose sum is σ = 76503351202662. Its totient is φ = 76503351202660.

The previous prime is 76503351202561. The next prime is 76503351202679. The reversal of 76503351202661 is 16620215330567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76030290616225 + 473060586436 = 8719535^2 + 687794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76503351202661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76503351202561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38251675601330 + 38251675601331.

It is an arithmetic number, because the mean of its divisors is an integer number (38251675601331).

Almost surely, 2^{76503351202661} is an apocalyptic number.

It is an amenable number.

76503351202661 is a deficient number, since it is larger than the sum of its proper divisors (1).

76503351202661 is an equidigital number, since it uses as much as digits as its factorization.

76503351202661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 76503351202661 in words is "seventy-six trillion, five hundred three billion, three hundred fifty-one million, two hundred two thousand, six hundred sixty-one".