78905269741 has 2 divisors, whose sum is σ = 78905269742. Its totient is φ = 78905269740.

The previous prime is 78905269679. The next prime is 78905269763. The reversal of 78905269741 is 14796250987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71420424516 + 7484845225 = 267246^2 + 86515^2 .

It is a cyclic number.

It is not a de Polignac number, because 78905269741 - 2⁹ = 78905269229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78905269241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39452634870 + 39452634871.

It is an arithmetic number, because the mean of its divisors is an integer number (39452634871).

Almost surely, 2^78905269741 is an apocalyptic number.

It is an amenable number.

78905269741 is a deficient number, since it is larger than the sum of its proper divisors (1).

78905269741 is an equidigital number, since it uses as much as digits as its factorization.

78905269741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 78905269741 in words is "seventy-eight billion, nine hundred five million, two hundred sixty-nine thousand, seven hundred forty-one".