1690382747272 has 8 divisors (see below), whose sum is σ = 3169467651150. Its totient is φ = 845191373632.

The previous prime is 1690382747257. The next prime is 1690382747321. The reversal of 1690382747272 is 2727472830961.

It can be written as a sum of positive squares in only one way, i.e., 1003695407716 + 686687339556 = 1001846^2 + 828666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 105648921697 + ... + 105648921712.

Almost surely, 2^{1690382747272} is an apocalyptic number.

It is an amenable number.

1690382747272 is a deficient number, since it is larger than the sum of its proper divisors (1479084903878).

1690382747272 is a wasteful number, since it uses less digits than its factorization.

1690382747272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211297843415 (or 211297843411 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 1690382747272 in words is "one trillion, six hundred ninety billion, three hundred eighty-two million, seven hundred forty-seven thousand, two hundred seventy-two".