66776714070 has 96 divisors (see below), whose sum is σ = 176605609824. Its totient is φ = 16147169280.

The previous prime is 66776714047. The next prime is 66776714083. The reversal of 66776714070 is 7041767766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1417942 + ... + 1464278.

It is an arithmetic number, because the mean of its divisors is an integer number (1839641769).

Almost surely, 2^66776714070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66776714070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88302804912).

66776714070 is an abundant number, since it is smaller than the sum of its proper divisors (109828895754).

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

66776714070 is a wasteful number, since it uses less digits than its factorization.

66776714070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46766 (or 46755 counting only the distinct ones).

The product of its (nonzero) digits is 2074464, while the sum is 51.

The spelling of 66776714070 in words is "sixty-six billion, seven hundred seventy-six million, seven hundred fourteen thousand, seventy".