1627448861491 has 8 divisors (see below), whose sum is σ = 1630329035760. Its totient is φ = 1624570892448.

The previous prime is 1627448861461. The next prime is 1627448861497. The reversal of 1627448861491 is 1941688447261.

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 1627448861491 - 2⁹ = 1627448860979 is a prime.

It is a super-3 number, since 3×1627448861491³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1627448861497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929505 + ... + 2029501.

It is an arithmetic number, because the mean of its divisors is an integer number (203791129470).

Almost surely, 2^{1627448861491} is an apocalyptic number.

1627448861491 is a deficient number, since it is larger than the sum of its proper divisors (2880174269).

1627448861491 is a wasteful number, since it uses less digits than its factorization.

1627448861491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102613.

The product of its digits is 18579456, while the sum is 61.

The spelling of 1627448861491 in words is "one trillion, six hundred twenty-seven billion, four hundred forty-eight million, eight hundred sixty-one thousand, four hundred ninety-one".