1620051464009 has 4 divisors (see below), whose sum is σ = 1767328869840. Its totient is φ = 1472774058180.

The previous prime is 1620051463993. The next prime is 1620051464033. The reversal of 1620051464009 is 9004641500261.

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 1620051464009 - 2⁴ = 1620051463993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1620051467009) 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, 73638702899 + ... + 73638702920.

It is an arithmetic number, because the mean of its divisors is an integer number (441832217460).

Almost surely, 2^{1620051464009} is an apocalyptic number.

It is an amenable number.

1620051464009 is a deficient number, since it is larger than the sum of its proper divisors (147277405831).

1620051464009 is a wasteful number, since it uses less digits than its factorization.

1620051464009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147277405830.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 1620051464009 in words is "one trillion, six hundred twenty billion, fifty-one million, four hundred sixty-four thousand, nine".