3547378606566 has 32 divisors (see below), whose sum is σ = 7653833542368. Its totient is φ = 1091904919040.

The previous prime is 3547378606547. The next prime is 3547378606613. The reversal of 3547378606566 is 6656068737453.

It is a junction number, because it is equal to n+sod(n) for n = 3547378606497 and 3547378606506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328091025 + ... + 328101836.

It is an arithmetic number, because the mean of its divisors is an integer number (239182298199).

Almost surely, 2^{3547378606566} is an apocalyptic number.

3547378606566 is an abundant number, since it is smaller than the sum of its proper divisors (4106454935802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3547378606566 is a wasteful number, since it uses less digits than its factorization.

3547378606566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656192936.

The product of its (nonzero) digits is 457228800, while the sum is 66.

The spelling of 3547378606566 in words is "three trillion, five hundred forty-seven billion, three hundred seventy-eight million, six hundred six thousand, five hundred sixty-six".