1011620520453 has 32 divisors (see below), whose sum is σ = 1433870530560. Its totient is φ = 632597031360.

The previous prime is 1011620520433. The next prime is 1011620520461. The reversal of 1011620520453 is 3540250261101.

It is not a de Polignac number, because 1011620520453 - 2³⁰ = 1010546778629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011620520453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011620520433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39857275 + ... + 39882647.

It is an arithmetic number, because the mean of its divisors is an integer number (44808454080).

Almost surely, 2^{1011620520453} is an apocalyptic number.

It is an amenable number.

1011620520453 is a deficient number, since it is larger than the sum of its proper divisors (422250010107).

1011620520453 is a wasteful number, since it uses less digits than its factorization.

1011620520453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32289.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1011620520453 its reverse (3540250261101), we get a palindrome (4551870781554).

The spelling of 1011620520453 in words is "one trillion, eleven billion, six hundred twenty million, five hundred twenty thousand, four hundred fifty-three".