1020656444513 has 4 divisors (see below), whose sum is σ = 1020658565040. Its totient is φ = 1020654323988.

The previous prime is 1020656444497. The next prime is 1020656444537. The reversal of 1020656444513 is 3154446560201.

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 1020656444513 - 2⁴ = 1020656444497 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 (1020656444573) 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, 47558 + ... + 1429536.

It is an arithmetic number, because the mean of its divisors is an integer number (255164641260).

Almost surely, 2^{1020656444513} is an apocalyptic number.

It is an amenable number.

1020656444513 is a deficient number, since it is larger than the sum of its proper divisors (2120527).

1020656444513 is an equidigital number, since it uses as much as digits as its factorization.

1020656444513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120526.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 1020656444513 in words is "one trillion, twenty billion, six hundred fifty-six million, four hundred forty-four thousand, five hundred thirteen".