2066478730542 has 12 divisors (see below), whose sum is σ = 4477370582880. Its totient is φ = 688826243508.

The previous prime is 2066478730529. The next prime is 2066478730573. The reversal of 2066478730542 is 2450378746602.

2066478730542 is a `hidden beast` number, since 2 + 0 + 6 + 64 + 7 + 8 + 7 + 30 + 542 = 666.

It is a super-2 number, since 2×2066478730542² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57402186942 + ... + 57402186977.

It is an arithmetic number, because the mean of its divisors is an integer number (373114215240).

Almost surely, 2^{2066478730542} is an apocalyptic number.

2066478730542 is an abundant number, since it is smaller than the sum of its proper divisors (2410891852338).

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

2066478730542 is a wasteful number, since it uses less digits than its factorization.

2066478730542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114804373927 (or 114804373924 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 54.

The spelling of 2066478730542 in words is "two trillion, sixty-six billion, four hundred seventy-eight million, seven hundred thirty thousand, five hundred forty-two".