69053853961 has 3 divisors (see below), whose sum is σ = 69054116743. Its totient is φ = 69053591180.

The previous prime is 69053853893. The next prime is 69053853977. The reversal of 69053853961 is 16935835096.

It is a happy number.

The square root of 69053853961 is 262781.

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., 43126413561 + 25927440400 = 207669^2 + 161020^2 .

It is a de Polignac number, because none of the positive numbers 2^k-69053853961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69053853361) 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, 131391 + ... + 394171.

Almost surely, 2^69053853961 is an apocalyptic number.

69053853961 is the 262781-st square number.

69053853961 is the 131391-st centered octagonal number.

It is an amenable number.

69053853961 is a deficient number, since it is larger than the sum of its proper divisors (262782).

69053853961 is an frugal number, since it uses more digits than its factorization.

69053853961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525562 (or 262781 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 55.

The spelling of 69053853961 in words is "sixty-nine billion, fifty-three million, eight hundred fifty-three thousand, nine hundred sixty-one".