1067778973961 has 8 divisors (see below), whose sum is σ = 1259683951104. Its totient is φ = 885715277760.

The previous prime is 1067778973957. The next prime is 1067778973997. The reversal of 1067778973961 is 1693798777601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1067778973961 - 2² = 1067778973957 is a prime.

It is a super-2 number, since 2×1067778973961² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1067778973861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2460320000 + ... + 2460320433.

It is an arithmetic number, because the mean of its divisors is an integer number (157460493888).

Almost surely, 2^{1067778973961} is an apocalyptic number.

It is an amenable number.

1067778973961 is a deficient number, since it is larger than the sum of its proper divisors (191904977143).

1067778973961 is an equidigital number, since it uses as much as digits as its factorization.

1067778973961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920640471.

The product of its (nonzero) digits is 168031584, while the sum is 71.

The spelling of 1067778973961 in words is "one trillion, sixty-seven billion, seven hundred seventy-eight million, nine hundred seventy-three thousand, nine hundred sixty-one".