78990103001 has 2 divisors, whose sum is σ = 78990103002. Its totient is φ = 78990103000.

The previous prime is 78990102967. The next prime is 78990103037. The reversal of 78990103001 is 10030109987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67423315600 + 11566787401 = 259660^2 + 107549^2 .

It is an emirp because it is prime and its reverse (10030109987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78990103001 - 2¹⁸ = 78989840857 is a prime.

It is not a weakly prime, because it can be changed into another prime (78990103081) 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, 39495051500 + 39495051501.

It is an arithmetic number, because the mean of its divisors is an integer number (39495051501).

Almost surely, 2^78990103001 is an apocalyptic number.

It is an amenable number.

78990103001 is a deficient number, since it is larger than the sum of its proper divisors (1).

78990103001 is an equidigital number, since it uses as much as digits as its factorization.

78990103001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 78990103001 in words is "seventy-eight billion, nine hundred ninety million, one hundred three thousand, one".