1406311406661 has 12 divisors (see below), whose sum is σ = 2181217692192. Its totient is φ = 803606518008.

The previous prime is 1406311406653. The next prime is 1406311406671. The reversal of 1406311406661 is 1666041136041.

It is not a de Polignac number, because 1406311406661 - 2³ = 1406311406653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406311406671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4783371985 + ... + 4783372278.

It is an arithmetic number, because the mean of its divisors is an integer number (181768141016).

Almost surely, 2^{1406311406661} is an apocalyptic number.

It is an amenable number.

1406311406661 is a deficient number, since it is larger than the sum of its proper divisors (774906285531).

1406311406661 is an equidigital number, since it uses as much as digits as its factorization.

1406311406661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9566744280 (or 9566744273 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 1406311406661 in words is "one trillion, four hundred six billion, three hundred eleven million, four hundred six thousand, six hundred sixty-one".