1631466479387 has 4 divisors (see below), whose sum is σ = 1655816725416. Its totient is φ = 1607116233360.

The previous prime is 1631466479341. The next prime is 1631466479399. The reversal of 1631466479387 is 7839746641361.

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

It is a cyclic number.

It is not a de Polignac number, because 1631466479387 - 2⁶ = 1631466479323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1631466479317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12175122914 + ... + 12175123047.

It is an arithmetic number, because the mean of its divisors is an integer number (413954181354).

Almost surely, 2^{1631466479387} is an apocalyptic number.

1631466479387 is a deficient number, since it is larger than the sum of its proper divisors (24350246029).

1631466479387 is an equidigital number, since it uses as much as digits as its factorization.

1631466479387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24350246028.

The product of its digits is 109734912, while the sum is 65.

The spelling of 1631466479387 in words is "one trillion, six hundred thirty-one billion, four hundred sixty-six million, four hundred seventy-nine thousand, three hundred eighty-seven".