53697572669 has 4 divisors (see below), whose sum is σ = 57828155196. Its totient is φ = 49566990144.

The previous prime is 53697572641. The next prime is 53697572689. The reversal of 53697572669 is 96627579635.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8415860644 + 45281712025 = 91738^2 + 212795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53697572669 is a prime.

It is a super-2 number, since 2×53697572669² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53697572609) 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, 2065291244 + ... + 2065291269.

It is an arithmetic number, because the mean of its divisors is an integer number (14457038799).

Almost surely, 2^53697572669 is an apocalyptic number.

It is an amenable number.

53697572669 is a deficient number, since it is larger than the sum of its proper divisors (4130582527).

53697572669 is a wasteful number, since it uses less digits than its factorization.

53697572669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4130582526.

The product of its digits is 128595600, while the sum is 65.

The spelling of 53697572669 in words is "fifty-three billion, six hundred ninety-seven million, five hundred seventy-two thousand, six hundred sixty-nine".