1645735005597 has 16 divisors (see below), whose sum is σ = 2266658887680. Its totient is φ = 1061032686000.

The previous prime is 1645735005583. The next prime is 1645735005611. The reversal of 1645735005597 is 7955005375461.

It is an interprime number because it is at equal distance from previous prime (1645735005583) and next prime (1645735005611).

It is not a de Polignac number, because 1645735005597 - 2¹² = 1645735001501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645735005547) 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, 5962947 + ... + 6232832.

It is an arithmetic number, because the mean of its divisors is an integer number (141666180480).

Almost surely, 2^{1645735005597} is an apocalyptic number.

It is an amenable number.

1645735005597 is a deficient number, since it is larger than the sum of its proper divisors (620923882083).

1645735005597 is a wasteful number, since it uses less digits than its factorization.

1645735005597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12197264.

The product of its (nonzero) digits is 19845000, while the sum is 57.

The spelling of 1645735005597 in words is "one trillion, six hundred forty-five billion, seven hundred thirty-five million, five thousand, five hundred ninety-seven".