2156550413959 has 2 divisors, whose sum is σ = 2156550413960. Its totient is φ = 2156550413958.

The previous prime is 2156550413921. The next prime is 2156550413977. The reversal of 2156550413959 is 9593140556512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2156550413959 - 2¹⁵ = 2156550381191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156550413909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078275206979 + 1078275206980.

It is an arithmetic number, because the mean of its divisors is an integer number (1078275206980).

Almost surely, 2^{2156550413959} is an apocalyptic number.

2156550413959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156550413959 is an equidigital number, since it uses as much as digits as its factorization.

2156550413959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290000, while the sum is 55.

The spelling of 2156550413959 in words is "two trillion, one hundred fifty-six billion, five hundred fifty million, four hundred thirteen thousand, nine hundred fifty-nine".