1320046978766 has 16 divisors (see below), whose sum is σ = 2013099970320. Its totient is φ = 649019777280.

The previous prime is 1320046978699. The next prime is 1320046978787. The reversal of 1320046978766 is 6678796400231.

It is a super-2 number, since 2×1320046978766² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096931 + ... + 1960446.

It is an arithmetic number, because the mean of its divisors is an integer number (125818748145).

Almost surely, 2^{1320046978766} is an apocalyptic number.

1320046978766 is a deficient number, since it is larger than the sum of its proper divisors (693052991554).

1320046978766 is a wasteful number, since it uses less digits than its factorization.

1320046978766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060979.

The product of its (nonzero) digits is 18289152, while the sum is 59.

The spelling of 1320046978766 in words is "one trillion, three hundred twenty billion, forty-six million, nine hundred seventy-eight thousand, seven hundred sixty-six".