1620603281059 has 4 divisors (see below), whose sum is σ = 1852118035504. Its totient is φ = 1389088526616.

The previous prime is 1620603281053. The next prime is 1620603281093. The reversal of 1620603281059 is 9501823060261.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1620603281059 - 2³³ = 1612013346467 is a prime.

It is a super-2 number, since 2×1620603281059² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1620603281053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115757377212 + ... + 115757377225.

It is an arithmetic number, because the mean of its divisors is an integer number (463029508876).

Almost surely, 2^{1620603281059} is an apocalyptic number.

1620603281059 is a deficient number, since it is larger than the sum of its proper divisors (231514754445).

1620603281059 is an equidigital number, since it uses as much as digits as its factorization.

1620603281059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231514754444.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 1620603281059 in words is "one trillion, six hundred twenty billion, six hundred three million, two hundred eighty-one thousand, fifty-nine".