2151442210549 has 2 divisors, whose sum is σ = 2151442210550. Its totient is φ = 2151442210548.

The previous prime is 2151442210501. The next prime is 2151442210553. The reversal of 2151442210549 is 9450122441512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1754816843025 + 396625367524 = 1324695^2 + 629782^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151442210549 - 2²³ = 2151433821941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151442210559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075721105274 + 1075721105275.

It is an arithmetic number, because the mean of its divisors is an integer number (1075721105275).

Almost surely, 2^{2151442210549} is an apocalyptic number.

It is an amenable number.

2151442210549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151442210549 is an equidigital number, since it uses as much as digits as its factorization.

2151442210549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 2151442210549 in words is "two trillion, one hundred fifty-one billion, four hundred forty-two million, two hundred ten thousand, five hundred forty-nine".