1388875666628 has 12 divisors (see below), whose sum is σ = 2430884155392. Its totient is φ = 694337336520.

The previous prime is 1388875666613. The next prime is 1388875666631. The reversal of 1388875666628 is 8266665788831.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25093100 + ... + 25148387.

It is an arithmetic number, because the mean of its divisors is an integer number (202573679616).

Almost surely, 2^{1388875666628} is an apocalyptic number.

It is an amenable number.

1388875666628 is a deficient number, since it is larger than the sum of its proper divisors (1042008488764).

1388875666628 is a wasteful number, since it uses less digits than its factorization.

1388875666628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50248402 (or 50248400 counting only the distinct ones).

The product of its digits is 1114767360, while the sum is 74.

The spelling of 1388875666628 in words is "one trillion, three hundred eighty-eight billion, eight hundred seventy-five million, six hundred sixty-six thousand, six hundred twenty-eight".