1620523133253 has 12 divisors (see below), whose sum is σ = 2351849268288. Its totient is φ = 1075228617960.

The previous prime is 1620523133239. The next prime is 1620523133269. The reversal of 1620523133253 is 3523313250261.

1620523133253 is a `hidden beast` number, since 1 + 620 + 5 + 2 + 3 + 1 + 3 + 3 + 25 + 3 = 666.

It is not a de Polignac number, because 1620523133253 - 2⁹ = 1620523132741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620523134253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426676125 + ... + 426679922.

It is an arithmetic number, because the mean of its divisors is an integer number (195987439024).

Almost surely, 2^{1620523133253} is an apocalyptic number.

It is an amenable number.

1620523133253 is a deficient number, since it is larger than the sum of its proper divisors (731326135035).

1620523133253 is a wasteful number, since it uses less digits than its factorization.

1620523133253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853356264 (or 853356261 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The spelling of 1620523133253 in words is "one trillion, six hundred twenty billion, five hundred twenty-three million, one hundred thirty-three thousand, two hundred fifty-three".