1988055959999 has 16 divisors (see below), whose sum is σ = 2032338272256. Its totient is φ = 1944232113600.

The previous prime is 1988055959969. The next prime is 1988055960061. The reversal of 1988055959999 is 9999595508891.

It is a cyclic number.

It is not a de Polignac number, because 1988055959999 - 2²⁴ = 1988039182783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1988055959999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988055959959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51711314 + ... + 51749744.

It is an arithmetic number, because the mean of its divisors is an integer number (127021142016).

Almost surely, 2^{1988055959999} is an apocalyptic number.

1988055959999 is a deficient number, since it is larger than the sum of its proper divisors (44282312257).

1988055959999 is a wasteful number, since it uses less digits than its factorization.

1988055959999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44366.

The product of its (nonzero) digits is 4251528000, while the sum is 86.

The spelling of 1988055959999 in words is "one trillion, nine hundred eighty-eight billion, fifty-five million, nine hundred fifty-nine thousand, nine hundred ninety-nine".