76802120641 has 2 divisors, whose sum is σ = 76802120642. Its totient is φ = 76802120640.

The previous prime is 76802120621. The next prime is 76802120687. The reversal of 76802120641 is 14602120867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61196864400 + 15605256241 = 247380^2 + 124921^2 .

It is a cyclic number.

It is not a de Polignac number, because 76802120641 - 2⁵ = 76802120609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76802120641.

It is not a weakly prime, because it can be changed into another prime (76802120621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38401060320 + 38401060321.

It is an arithmetic number, because the mean of its divisors is an integer number (38401060321).

Almost surely, 2^76802120641 is an apocalyptic number.

It is an amenable number.

76802120641 is a deficient number, since it is larger than the sum of its proper divisors (1).

76802120641 is an equidigital number, since it uses as much as digits as its factorization.

76802120641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 76802120641 in words is "seventy-six billion, eight hundred two million, one hundred twenty thousand, six hundred forty-one".