2777556706066 has 16 divisors (see below), whose sum is σ = 4168774843200. Its totient is φ = 1387965317328.

The previous prime is 2777556706061. The next prime is 2777556706181. The reversal of 2777556706066 is 6606076557772.

It is a junction number, because it is equal to n+sod(n) for n = 2777556705989 and 2777556706007.

It is not an unprimeable number, because it can be changed into a prime (2777556706061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26342740 + ... + 26447968.

It is an arithmetic number, because the mean of its divisors is an integer number (260548427700).

Almost surely, 2^{2777556706066} is an apocalyptic number.

2777556706066 is a deficient number, since it is larger than the sum of its proper divisors (1391218137134).

2777556706066 is a wasteful number, since it uses less digits than its factorization.

2777556706066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112833.

The product of its (nonzero) digits is 155584800, while the sum is 64.

The spelling of 2777556706066 in words is "two trillion, seven hundred seventy-seven billion, five hundred fifty-six million, seven hundred six thousand, sixty-six".