78837408373 has 2 divisors, whose sum is σ = 78837408374. Its totient is φ = 78837408372.

The previous prime is 78837408359. The next prime is 78837408389. The reversal of 78837408373 is 37380473887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78222021124 + 615387249 = 279682^2 + 24807^2 .

It is a cyclic number.

It is not a de Polignac number, because 78837408373 - 2⁵ = 78837408341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78837408323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39418704186 + 39418704187.

It is an arithmetic number, because the mean of its divisors is an integer number (39418704187).

Almost surely, 2^78837408373 is an apocalyptic number.

It is an amenable number.

78837408373 is a deficient number, since it is larger than the sum of its proper divisors (1).

78837408373 is an equidigital number, since it uses as much as digits as its factorization.

78837408373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18966528, while the sum is 58.

The spelling of 78837408373 in words is "seventy-eight billion, eight hundred thirty-seven million, four hundred eight thousand, three hundred seventy-three".