1406120056661 has 8 divisors (see below), whose sum is σ = 1424476120320. Its totient is φ = 1387777920048.

The previous prime is 1406120056657. The next prime is 1406120056739. The reversal of 1406120056661 is 1666500216041.

It is a happy number.

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 1406120056661 - 2² = 1406120056657 is a prime.

It is a super-2 number, since 2×1406120056661² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406120056631) 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, 3278441 + ... + 3682446.

It is an arithmetic number, because the mean of its divisors is an integer number (178059515040).

Almost surely, 2^{1406120056661} is an apocalyptic number.

It is an amenable number.

1406120056661 is a deficient number, since it is larger than the sum of its proper divisors (18356063659).

1406120056661 is an equidigital number, since it uses as much as digits as its factorization.

1406120056661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963523.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 1406120056661 in words is "one trillion, four hundred six billion, one hundred twenty million, fifty-six thousand, six hundred sixty-one".