10778315666 has 16 divisors (see below), whose sum is σ = 16289281440. Its totient is φ = 5348672160.

The previous prime is 10778315663. The next prime is 10778315677. The reversal of 10778315666 is 66651387701.

It is a super-4 number, since 4×10778315666⁴ (a number of 41 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (10778315663) 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, 157625 + ... + 215411.

It is an arithmetic number, because the mean of its divisors is an integer number (1018080090).

Almost surely, 2^10778315666 is an apocalyptic number.

10778315666 is a deficient number, since it is larger than the sum of its proper divisors (5510965774).

10778315666 is a wasteful number, since it uses less digits than its factorization.

10778315666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58489.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 10778315666 in words is "ten billion, seven hundred seventy-eight million, three hundred fifteen thousand, six hundred sixty-six".