2153077871569 has 3 divisors (see below), whose sum is σ = 2153079338907. Its totient is φ = 2153076404232.

The previous prime is 2153077871431. The next prime is 2153077871629. The reversal of 2153077871569 is 9651787703512.

The square root of 2153077871569 is 1467337.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 634977891025 + 1518099980544 = 796855^2 + 1232112^2 .

It is not a de Polignac number, because 2153077871569 - 2¹⁷ = 2153077740497 is a prime.

It is a super-2 number, since 2×2153077871569² (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 (2153077871669) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 733669 + ... + 2201005.

It is an arithmetic number, because the mean of its divisors is an integer number (717693112969).

Almost surely, 2^{2153077871569} is an apocalyptic number.

2153077871569 is the 1467337-th square number.

2153077871569 is the 733669-th centered octagonal number.

It is an amenable number.

2153077871569 is a deficient number, since it is larger than the sum of its proper divisors (1467338).

2153077871569 is an frugal number, since it uses more digits than its factorization.

2153077871569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934674 (or 1467337 counting only the distinct ones).

The product of its (nonzero) digits is 22226400, while the sum is 61.

The spelling of 2153077871569 in words is "two trillion, one hundred fifty-three billion, seventy-seven million, eight hundred seventy-one thousand, five hundred sixty-nine".