1688748051629 has 16 divisors (see below), whose sum is σ = 1799187386304. Its totient is φ = 1582862601600.

The previous prime is 1688748051607. The next prime is 1688748051677. The reversal of 1688748051629 is 9261508478861.

It is a cyclic number.

It is not a de Polignac number, because 1688748051629 - 2¹² = 1688748047533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688748051689) 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 15 ways as a sum of consecutive naturals, for example, 7743959 + ... + 7959044.

It is an arithmetic number, because the mean of its divisors is an integer number (112449211644).

Almost surely, 2^{1688748051629} is an apocalyptic number.

It is an amenable number.

1688748051629 is a deficient number, since it is larger than the sum of its proper divisors (110439334675).

1688748051629 is a wasteful number, since it uses less digits than its factorization.

1688748051629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15703148.

The product of its (nonzero) digits is 46448640, while the sum is 65.

The spelling of 1688748051629 in words is "one trillion, six hundred eighty-eight billion, seven hundred forty-eight million, fifty-one thousand, six hundred twenty-nine".