66103161390 has 72 divisors (see below), whose sum is σ = 199928350440. Its totient is φ = 15109293024.

The previous prime is 66103161379. The next prime is 66103161409. The reversal of 66103161390 is 9316130166.

66103161390 is a `hidden beast` number, since 6 + 6 + 1 + 0 + 31 + 613 + 9 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7490280 + ... + 7499099.

It is an arithmetic number, because the mean of its divisors is an integer number (2776782645).

Almost surely, 2^66103161390 is an apocalyptic number.

66103161390 is an abundant number, since it is smaller than the sum of its proper divisors (133825189050).

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

66103161390 is a wasteful number, since it uses less digits than its factorization.

66103161390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14989406 (or 14989396 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The spelling of 66103161390 in words is "sixty-six billion, one hundred three million, one hundred sixty-one thousand, three hundred ninety".