1414406215661 has 4 divisors (see below), whose sum is σ = 1414757974524. Its totient is φ = 1414054456800.

The previous prime is 1414406215639. The next prime is 1414406215751. The reversal of 1414406215661 is 1665126044141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 163878422761 + 1250527792900 = 404819^2 + 1118270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1414406215661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1414406245661) 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, 175873400 + ... + 175881441.

It is an arithmetic number, because the mean of its divisors is an integer number (353689493631).

Almost surely, 2^{1414406215661} is an apocalyptic number.

It is an amenable number.

1414406215661 is a deficient number, since it is larger than the sum of its proper divisors (351758863).

1414406215661 is an equidigital number, since it uses as much as digits as its factorization.

1414406215661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351758862.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 1414406215661 in words is "one trillion, four hundred fourteen billion, four hundred six million, two hundred fifteen thousand, six hundred sixty-one".