1988916825356 has 12 divisors (see below), whose sum is σ = 3481055529168. Its totient is φ = 994329531312.

The previous prime is 1988916825331. The next prime is 1988916825359. The reversal of 1988916825356 is 6535286198891.

It is a self number, because there is not a number n which added to its sum of digits gives 1988916825356.

It is not an unprimeable number, because it can be changed into a prime (1988916825359) 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, 32185616 + ... + 32247351.

It is an arithmetic number, because the mean of its divisors is an integer number (290087960764).

Almost surely, 2^{1988916825356} is an apocalyptic number.

It is an amenable number.

1988916825356 is a deficient number, since it is larger than the sum of its proper divisors (1492138703812).

1988916825356 is a wasteful number, since it uses less digits than its factorization.

1988916825356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64440688 (or 64440686 counting only the distinct ones).

The product of its digits is 223948800, while the sum is 71.

The spelling of 1988916825356 in words is "one trillion, nine hundred eighty-eight billion, nine hundred sixteen million, eight hundred twenty-five thousand, three hundred fifty-six".