1388885980966 has 8 divisors (see below), whose sum is σ = 2272722514344. Its totient is φ = 631311809520.

The previous prime is 1388885980961. The next prime is 1388885980997. The reversal of 1388885980966 is 6690895888831.

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

It is a super-2 number, since 2×1388885980966² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388885980961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31565590455 + ... + 31565590498.

It is an arithmetic number, because the mean of its divisors is an integer number (284090314293).

Almost surely, 2^{1388885980966} is an apocalyptic number.

1388885980966 is a deficient number, since it is larger than the sum of its proper divisors (883836533378).

1388885980966 is a wasteful number, since it uses less digits than its factorization.

1388885980966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63131180966.

The product of its (nonzero) digits is 1433272320, while the sum is 79.

The spelling of 1388885980966 in words is "one trillion, three hundred eighty-eight billion, eight hundred eighty-five million, nine hundred eighty thousand, nine hundred sixty-six".