2153640416569 has 4 divisors (see below), whose sum is σ = 2154218268544. Its totient is φ = 2153062564596.

The previous prime is 2153640416563. The next prime is 2153640416611. The reversal of 2153640416569 is 9656140463512.

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 2153640416569 - 2¹⁵ = 2153640383801 is a prime.

It is a super-2 number, since 2×2153640416569² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153640416563) 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, 288920397 + ... + 288927850.

It is an arithmetic number, because the mean of its divisors is an integer number (538554567136).

Almost surely, 2^{2153640416569} is an apocalyptic number.

It is an amenable number.

2153640416569 is a deficient number, since it is larger than the sum of its proper divisors (577851975).

2153640416569 is an equidigital number, since it uses as much as digits as its factorization.

2153640416569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577851974.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 2153640416569 in words is "two trillion, one hundred fifty-three billion, six hundred forty million, four hundred sixteen thousand, five hundred sixty-nine".