3662637705641 has 4 divisors (see below), whose sum is σ = 3689372287572. Its totient is φ = 3635903123712.

The previous prime is 3662637705619. The next prime is 3662637705653. The reversal of 3662637705641 is 1465077362663.

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 1050001892416 + 2612635813225 = 1024696^2 + 1616365^2 .

It is a cyclic number.

It is not a de Polignac number, because 3662637705641 - 2¹⁴ = 3662637689257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3662637705611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13367290760 + ... + 13367291033.

It is an arithmetic number, because the mean of its divisors is an integer number (922343071893).

Almost surely, 2^{3662637705641} is an apocalyptic number.

It is an amenable number.

3662637705641 is a deficient number, since it is larger than the sum of its proper divisors (26734581931).

3662637705641 is a wasteful number, since it uses less digits than its factorization.

3662637705641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26734581930.

The product of its (nonzero) digits is 22861440, while the sum is 56.

The spelling of 3662637705641 in words is "three trillion, six hundred sixty-two billion, six hundred thirty-seven million, seven hundred five thousand, six hundred forty-one".