78770645702603 has 2 divisors, whose sum is σ = 78770645702604. Its totient is φ = 78770645702602.

The previous prime is 78770645702587. The next prime is 78770645702653. The reversal of 78770645702603 is 30620754607787.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78770645702603 - 2⁴ = 78770645702587 is a prime.

It is not a weakly prime, because it can be changed into another prime (78770645702653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39385322851301 + 39385322851302.

It is an arithmetic number, because the mean of its divisors is an integer number (39385322851302).

Almost surely, 2^{78770645702603} is an apocalyptic number.

78770645702603 is a deficient number, since it is larger than the sum of its proper divisors (1).

78770645702603 is an equidigital number, since it uses as much as digits as its factorization.

78770645702603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82978560, while the sum is 62.

The spelling of 78770645702603 in words is "seventy-eight trillion, seven hundred seventy billion, six hundred forty-five million, seven hundred two thousand, six hundred three".