66078503334 has 12 divisors (see below), whose sum is σ = 143170090596. Its totient is φ = 22026167772.

The previous prime is 66078503317. The next prime is 66078503339. The reversal of 66078503334 is 43330587066.

66078503334 is a `hidden beast` number, since 6 + 607 + 8 + 5 + 0 + 3 + 3 + 34 = 666.

It is a super-2 number, since 2×66078503334² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66078503334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66078503339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1835513964 + ... + 1835513999.

It is an arithmetic number, because the mean of its divisors is an integer number (11930840883).

Almost surely, 2^66078503334 is an apocalyptic number.

66078503334 is an abundant number, since it is smaller than the sum of its proper divisors (77091587262).

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

66078503334 is a wasteful number, since it uses less digits than its factorization.

66078503334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671027971 (or 3671027968 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 66078503334 in words is "sixty-six billion, seventy-eight million, five hundred three thousand, three hundred thirty-four".