122664215983 has 4 divisors (see below), whose sum is σ = 126621126208. Its totient is φ = 118707305760.

The previous prime is 122664215981. The next prime is 122664215987. The reversal of 122664215983 is 389512466221.

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 122664215983 - 2¹ = 122664215981 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 (122664215981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1978455066 + ... + 1978455127.

It is an arithmetic number, because the mean of its divisors is an integer number (31655281552).

Almost surely, 2^122664215983 is an apocalyptic number.

122664215983 is a deficient number, since it is larger than the sum of its proper divisors (3956910225).

122664215983 is an equidigital number, since it uses as much as digits as its factorization.

122664215983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3956910224.

The product of its digits is 1244160, while the sum is 49.

The spelling of 122664215983 in words is "one hundred twenty-two billion, six hundred sixty-four million, two hundred fifteen thousand, nine hundred eighty-three".