69975591841 has 3 divisors (see below), whose sum is σ = 69975856371. Its totient is φ = 69975327312.

The previous prime is 69975591821. The next prime is 69975591857. The reversal of 69975591841 is 14819557996.

The square root of 69975591841 is 264529.

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., 279591841 + 69696000000 = 16721^2 + 264000^2 .

It is not a de Polignac number, because 69975591841 - 2⁵ = 69975591809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69975591821) 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, 132265 + ... + 396793.

It is an arithmetic number, because the mean of its divisors is an integer number (23325285457).

Almost surely, 2^69975591841 is an apocalyptic number.

69975591841 is the 264529-th square number.

69975591841 is the 132265-th centered octagonal number.

It is an amenable number.

69975591841 is a deficient number, since it is larger than the sum of its proper divisors (264530).

69975591841 is an frugal number, since it uses more digits than its factorization.

69975591841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529058 (or 264529 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 64.

Multiplying 69975591841 by its sum of digits (64), we get a square (4478437877824 = 2116232²).

The spelling of 69975591841 in words is "sixty-nine billion, nine hundred seventy-five million, five hundred ninety-one thousand, eight hundred forty-one".