1020320513454 has 32 divisors (see below), whose sum is σ = 2226966410880. Its totient is φ = 309075178400.

The previous prime is 1020320513453. The next prime is 1020320513467. The reversal of 1020320513454 is 4543150230201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020320513453) 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, 2639124 + ... + 3000935.

It is an arithmetic number, because the mean of its divisors is an integer number (69592700340).

Almost surely, 2^{1020320513454} is an apocalyptic number.

1020320513454 is an abundant number, since it is smaller than the sum of its proper divisors (1206645897426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020320513454 is a wasteful number, since it uses less digits than its factorization.

1020320513454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642816.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 1020320513454 its reverse (4543150230201), we get a palindrome (5563470743655).

The spelling of 1020320513454 in words is "one trillion, twenty billion, three hundred twenty million, five hundred thirteen thousand, four hundred fifty-four".