2122374778943 has 4 divisors (see below), whose sum is σ = 2157167808168. Its totient is φ = 2087581749720.

The previous prime is 2122374778939. The next prime is 2122374778987. The reversal of 2122374778943 is 3498774732212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2122374778943 - 2² = 2122374778939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122374778913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17396514521 + ... + 17396514642.

It is an arithmetic number, because the mean of its divisors is an integer number (539291952042).

Almost surely, 2^{2122374778943} is an apocalyptic number.

2122374778943 is a deficient number, since it is larger than the sum of its proper divisors (34793029225).

2122374778943 is an equidigital number, since it uses as much as digits as its factorization.

2122374778943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34793029224.

The product of its digits is 28449792, while the sum is 59.

The spelling of 2122374778943 in words is "two trillion, one hundred twenty-two billion, three hundred seventy-four million, seven hundred seventy-eight thousand, nine hundred forty-three".