78826053793 has 2 divisors, whose sum is σ = 78826053794. Its totient is φ = 78826053792.

The previous prime is 78826053769. The next prime is 78826053797. The reversal of 78826053793 is 39735062887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57164984464 + 21661069329 = 239092^2 + 147177^2 .

It is a cyclic number.

It is not a de Polignac number, because 78826053793 - 2²¹ = 78823956641 is a prime.

It is not a weakly prime, because it can be changed into another prime (78826053797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39413026896 + 39413026897.

It is an arithmetic number, because the mean of its divisors is an integer number (39413026897).

Almost surely, 2^78826053793 is an apocalyptic number.

It is an amenable number.

78826053793 is a deficient number, since it is larger than the sum of its proper divisors (1).

78826053793 is an equidigital number, since it uses as much as digits as its factorization.

78826053793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 78826053793 in words is "seventy-eight billion, eight hundred twenty-six million, fifty-three thousand, seven hundred ninety-three".