1620275032173 has 16 divisors (see below), whose sum is σ = 2474393144960. Its totient is φ = 923845464576.

The previous prime is 1620275032127. The next prime is 1620275032177. The reversal of 1620275032173 is 3712305720261.

It is not a de Polignac number, because 1620275032173 - 2¹⁷ = 1620274901101 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 (1620275032177) 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, 84406108 + ... + 84425301.

It is an arithmetic number, because the mean of its divisors is an integer number (154649571560).

Almost surely, 2^{1620275032173} is an apocalyptic number.

It is an amenable number.

1620275032173 is a deficient number, since it is larger than the sum of its proper divisors (854118112787).

1620275032173 is a wasteful number, since it uses less digits than its factorization.

1620275032173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168831876.

The product of its (nonzero) digits is 105840, while the sum is 39.

The spelling of 1620275032173 in words is "one trillion, six hundred twenty billion, two hundred seventy-five million, thirty-two thousand, one hundred seventy-three".