3746658566407 has 4 divisors (see below), whose sum is σ = 3788755853760. Its totient is φ = 3704561279056.

The previous prime is 3746658566389. The next prime is 3746658566411. The reversal of 3746658566407 is 7046658566473.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3746658566407 - 2¹⁹ = 3746658042119 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3746658506407) 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, 21048643543 + ... + 21048643720.

It is an arithmetic number, because the mean of its divisors is an integer number (947188963440).

Almost surely, 2^{3746658566407} is an apocalyptic number.

3746658566407 is a deficient number, since it is larger than the sum of its proper divisors (42097287353).

3746658566407 is an equidigital number, since it uses as much as digits as its factorization.

3746658566407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42097287352.

The product of its (nonzero) digits is 609638400, while the sum is 67.

The spelling of 3746658566407 in words is "three trillion, seven hundred forty-six billion, six hundred fifty-eight million, five hundred sixty-six thousand, four hundred seven".