10401067778 has 8 divisors (see below), whose sum is σ = 15628642572. Its totient is φ = 5191520256.

The previous prime is 10401067777. The next prime is 10401067783. The reversal of 10401067778 is 87776010401.

It can be written as a sum of positive squares in 2 ways, for example, as 5922379849 + 4478687929 = 76957^2 + 66923^2 .

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

It is not an unprimeable number, because it can be changed into a prime (10401067777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4505375 + ... + 4507682.

Almost surely, 2^10401067778 is an apocalyptic number.

10401067778 is a deficient number, since it is larger than the sum of its proper divisors (5227574794).

10401067778 is an equidigital number, since it uses as much as digits as its factorization.

10401067778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9013636.

The product of its (nonzero) digits is 65856, while the sum is 41.

The spelling of 10401067778 in words is "ten billion, four hundred one million, sixty-seven thousand, seven hundred seventy-eight".