69612687427661 has 16 divisors (see below), whose sum is σ = 84237967031040. Its totient is φ = 56157624103680.

The previous prime is 69612687427589. The next prime is 69612687427739. The reversal of 69612687427661 is 16672478621696.

It is a cyclic number.

It is not a de Polignac number, because 69612687427661 - 2³⁸ = 69337809520717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69612687457661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10777496 + ... + 15980606.

It is an arithmetic number, because the mean of its divisors is an integer number (5264872939440).

Almost surely, 2^{69612687427661} is an apocalyptic number.

It is an amenable number.

69612687427661 is a deficient number, since it is larger than the sum of its proper divisors (14625279603379).

69612687427661 is a wasteful number, since it uses less digits than its factorization.

69612687427661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5315564.

The product of its digits is 438939648, while the sum is 71.

The spelling of 69612687427661 in words is "sixty-nine trillion, six hundred twelve billion, six hundred eighty-seven million, four hundred twenty-seven thousand, six hundred sixty-one".