77252033252609 has 2 divisors, whose sum is σ = 77252033252610. Its totient is φ = 77252033252608.

The previous prime is 77252033252599. The next prime is 77252033252617. The reversal of 77252033252609 is 90625233025277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75648732826384 + 1603300426225 = 8697628^2 + 1266215^2 .

It is an emirp because it is prime and its reverse (90625233025277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77252033252609 - 2¹⁶ = 77252033187073 is a prime.

It is not a weakly prime, because it can be changed into another prime (77252033252659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38626016626304 + 38626016626305.

It is an arithmetic number, because the mean of its divisors is an integer number (38626016626305).

Almost surely, 2^{77252033252609} is an apocalyptic number.

It is an amenable number.

77252033252609 is a deficient number, since it is larger than the sum of its proper divisors (1).

77252033252609 is an equidigital number, since it uses as much as digits as its factorization.

77252033252609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9525600, while the sum is 53.

The spelling of 77252033252609 in words is "seventy-seven trillion, two hundred fifty-two billion, thirty-three million, two hundred fifty-two thousand, six hundred nine".