1988765575696 has 45 divisors (see below), whose sum is σ = 3949966181613. Its totient is φ = 970016730240.

The previous prime is 1988765575691. The next prime is 1988765575697. The reversal of 1988765575696 is 6965755678891.

The square root of 1988765575696 is 1410236.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 95829870096 + 1892935705600 = 309564^2 + 1375840^2 .

It is a Harshad number since it is a multiple of its sum of digits (82).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1988765575691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 231274405 + ... + 231283003.

Almost surely, 2^{1988765575696} is an apocalyptic number.

1988765575696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1988765575696 is the 1410236-th square number.

It is an amenable number.

1988765575696 is a deficient number, since it is larger than the sum of its proper divisors (1961200605917).

1988765575696 is an frugal number, since it uses more digits than its factorization.

1988765575696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17288 (or 8642 counting only the distinct ones).

The product of its digits is 6858432000, while the sum is 82.

The spelling of 1988765575696 in words is "one trillion, nine hundred eighty-eight billion, seven hundred sixty-five million, five hundred seventy-five thousand, six hundred ninety-six".