1631666213241 has 8 divisors (see below), whose sum is σ = 2206196570304. Its totient is φ = 1072456665840.

The previous prime is 1631666213237. The next prime is 1631666213321. The reversal of 1631666213241 is 1423126661361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1631666213241 - 2² = 1631666213237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1631666213193 and 1631666213202.

It is not an unprimeable number, because it can be changed into a prime (1631666213941) 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, 3830202166 + ... + 3830202591.

It is an arithmetic number, because the mean of its divisors is an integer number (275774571288).

Almost surely, 2^{1631666213241} is an apocalyptic number.

It is an amenable number.

1631666213241 is a deficient number, since it is larger than the sum of its proper divisors (574530357063).

1631666213241 is an equidigital number, since it uses as much as digits as its factorization.

1631666213241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660404831.

The product of its digits is 186624, while the sum is 42.

The spelling of 1631666213241 in words is "one trillion, six hundred thirty-one billion, six hundred sixty-six million, two hundred thirteen thousand, two hundred forty-one".