77488747001 has 2 divisors, whose sum is σ = 77488747002. Its totient is φ = 77488747000.

The previous prime is 77488746967. The next prime is 77488747009. The reversal of 77488747001 is 10074788477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48377562601 + 29111184400 = 219949^2 + 170620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77488747001 is a prime.

It is not a weakly prime, because it can be changed into another prime (77488747009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38744373500 + 38744373501.

It is an arithmetic number, because the mean of its divisors is an integer number (38744373501).

Almost surely, 2^77488747001 is an apocalyptic number.

It is an amenable number.

77488747001 is a deficient number, since it is larger than the sum of its proper divisors (1).

77488747001 is an equidigital number, since it uses as much as digits as its factorization.

77488747001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2458624, while the sum is 53.

The spelling of 77488747001 in words is "seventy-seven billion, four hundred eighty-eight million, seven hundred forty-seven thousand, one".