10284778401661 has 8 divisors (see below), whose sum is σ = 10293219115200. Its totient is φ = 10276338121920.

The previous prime is 10284778401649. The next prime is 10284778401739. The reversal of 10284778401661 is 16610487748201.

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 10284778401661 - 2⁵ = 10284778401629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10284778401631) by changing a digit.

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, 61646725 + ... + 61813333.

It is an arithmetic number, because the mean of its divisors is an integer number (1286652389400).

Almost surely, 2^{10284778401661} is an apocalyptic number.

It is an amenable number.

10284778401661 is a deficient number, since it is larger than the sum of its proper divisors (8440713539).

10284778401661 is a wasteful number, since it uses less digits than its factorization.

10284778401661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216899.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 10284778401661 in words is "ten trillion, two hundred eighty-four billion, seven hundred seventy-eight million, four hundred one thousand, six hundred sixty-one".