1702020205397 has 4 divisors (see below), whose sum is σ = 1702032110016. Its totient is φ = 1702008300780.

The previous prime is 1702020205351. The next prime is 1702020205463. The reversal of 1702020205397 is 7935020202071.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1702020205397 - 2²⁶ = 1701953096533 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 1702020205397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1702020205307) 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 3 ways as a sum of consecutive naturals, for example, 5735213 + ... + 6024674.

It is an arithmetic number, because the mean of its divisors is an integer number (425508027504).

Almost surely, 2^{1702020205397} is an apocalyptic number.

It is an amenable number.

1702020205397 is a deficient number, since it is larger than the sum of its proper divisors (11904619).

1702020205397 is a wasteful number, since it uses less digits than its factorization.

1702020205397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11904618.

The product of its (nonzero) digits is 52920, while the sum is 38.

The spelling of 1702020205397 in words is "one trillion, seven hundred two billion, twenty million, two hundred five thousand, three hundred ninety-seven".