66777114344 has 8 divisors (see below), whose sum is σ = 125207089410. Its totient is φ = 33388557168.

The previous prime is 66777114319. The next prime is 66777114359. The reversal of 66777114344 is 44341177766.

It can be written as a sum of positive squares in only one way, i.e., 47813070244 + 18964044100 = 218662^2 + 137710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×66777114344² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66777114292 and 66777114301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4173569639 + ... + 4173569654.

Almost surely, 2^66777114344 is an apocalyptic number.

It is an amenable number.

66777114344 is a deficient number, since it is larger than the sum of its proper divisors (58429975066).

66777114344 is a wasteful number, since it uses less digits than its factorization.

66777114344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8347139299 (or 8347139295 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 50.

The spelling of 66777114344 in words is "sixty-six billion, seven hundred seventy-seven million, one hundred fourteen thousand, three hundred forty-four".