1620012262017 has 4 divisors (see below), whose sum is σ = 2160016349360. Its totient is φ = 1080008174676.

The previous prime is 1620012261979. The next prime is 1620012262069. The reversal of 1620012262017 is 7102622100261.

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 not a de Polignac number, because 1620012262017 - 2¹² = 1620012257921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1620012262097) 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, 270002043667 + ... + 270002043672.

It is an arithmetic number, because the mean of its divisors is an integer number (540004087340).

Almost surely, 2^{1620012262017} is an apocalyptic number.

It is an amenable number.

1620012262017 is a deficient number, since it is larger than the sum of its proper divisors (540004087343).

1620012262017 is an equidigital number, since it uses as much as digits as its factorization.

1620012262017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540004087342.

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 1620012262017 its reverse (7102622100261), we get a palindrome (8722634362278).

The spelling of 1620012262017 in words is "one trillion, six hundred twenty billion, twelve million, two hundred sixty-two thousand, seventeen".