2378019978911 has 2 divisors, whose sum is σ = 2378019978912. Its totient is φ = 2378019978910.

The previous prime is 2378019978881. The next prime is 2378019978949. The reversal of 2378019978911 is 1198799108732.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2378019978911 - 2⁶ = 2378019978847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2378019978211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1189009989455 + 1189009989456.

It is an arithmetic number, because the mean of its divisors is an integer number (1189009989456).

Almost surely, 2^{2378019978911} is an apocalyptic number.

2378019978911 is a deficient number, since it is larger than the sum of its proper divisors (1).

2378019978911 is an equidigital number, since it uses as much as digits as its factorization.

2378019978911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 65.

The spelling of 2378019978911 in words is "two trillion, three hundred seventy-eight billion, nineteen million, nine hundred seventy-eight thousand, nine hundred eleven".