122777217512443 has 8 divisors (see below), whose sum is σ = 135034844793408. Its totient is φ = 110921479650624.

The previous prime is 122777217512401. The next prime is 122777217512461. The reversal of 122777217512443 is 344215712777221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122777217512443 - 2²¹ = 122777215415291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122777217512483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100472354146 + ... + 100472355367.

It is an arithmetic number, because the mean of its divisors is an integer number (16879355599176).

Almost surely, 2^{122777217512443} is an apocalyptic number.

122777217512443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

122777217512443 is a deficient number, since it is larger than the sum of its proper divisors (12257627280965).

122777217512443 is a wasteful number, since it uses less digits than its factorization.

122777217512443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200944709573.

The product of its digits is 9219840, while the sum is 55.

The spelling of 122777217512443 in words is "one hundred twenty-two trillion, seven hundred seventy-seven billion, two hundred seventeen million, five hundred twelve thousand, four hundred forty-three".