2154104623439 has 2 divisors, whose sum is σ = 2154104623440. Its totient is φ = 2154104623438.

The previous prime is 2154104623343. The next prime is 2154104623453. The reversal of 2154104623439 is 9343264014512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2154104623439 - 2²⁸ = 2153836187983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2154104623439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154104613439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077052311719 + 1077052311720.

It is an arithmetic number, because the mean of its divisors is an integer number (1077052311720).

Almost surely, 2^{2154104623439} is an apocalyptic number.

2154104623439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154104623439 is an equidigital number, since it uses as much as digits as its factorization.

2154104623439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 2154104623439 in words is "two trillion, one hundred fifty-four billion, one hundred four million, six hundred twenty-three thousand, four hundred thirty-nine".