1406143426561 has 8 divisors (see below), whose sum is σ = 1423121777280. Its totient is φ = 1389165953712.

The previous prime is 1406143426549. The next prime is 1406143426577. The reversal of 1406143426561 is 1656243416041.

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 1406143426561 - 2⁷ = 1406143426433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406143426591) 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, 3352120 + ... + 3748198.

It is an arithmetic number, because the mean of its divisors is an integer number (177890222160).

Almost surely, 2^{1406143426561} is an apocalyptic number.

It is an amenable number.

1406143426561 is a deficient number, since it is larger than the sum of its proper divisors (16978350719).

1406143426561 is an equidigital number, since it uses as much as digits as its factorization.

1406143426561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438935.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 1406143426561 in words is "one trillion, four hundred six billion, one hundred forty-three million, four hundred twenty-six thousand, five hundred sixty-one".