1020453413553 has 24 divisors (see below), whose sum is σ = 1684756090368. Its totient is φ = 583047672192.

The previous prime is 1020453413513. The next prime is 1020453413587. The reversal of 1020453413553 is 3553143540201.

1020453413553 is a `hidden beast` number, since 1 + 0 + 20 + 45 + 3 + 41 + 3 + 553 = 666.

It is not a de Polignac number, because 1020453413553 - 2¹⁶ = 1020453348017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020453413513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409800 + ... + 1486217.

It is an arithmetic number, because the mean of its divisors is an integer number (70198170432).

Almost surely, 2^{1020453413553} is an apocalyptic number.

It is an amenable number.

1020453413553 is a deficient number, since it is larger than the sum of its proper divisors (664302676815).

1020453413553 is a wasteful number, since it uses less digits than its factorization.

1020453413553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904573 (or 1904570 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 1020453413553 its reverse (3553143540201), we get a palindrome (4573596953754).

The spelling of 1020453413553 in words is "one trillion, twenty billion, four hundred fifty-three million, four hundred thirteen thousand, five hundred fifty-three".