1624412166661 has 4 divisors (see below), whose sum is σ = 1624468931424. Its totient is φ = 1624355401900.

The previous prime is 1624412166659. The next prime is 1624412166673. The reversal of 1624412166661 is 1666612144261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1624412166661 - 2¹ = 1624412166659 is a prime.

It is a super-3 number, since 3×1624412166661³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1624412166631) 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, 28339435 + ... + 28396696.

It is an arithmetic number, because the mean of its divisors is an integer number (406117232856).

Almost surely, 2^{1624412166661} is an apocalyptic number.

It is an amenable number.

1624412166661 is a deficient number, since it is larger than the sum of its proper divisors (56764763).

1624412166661 is an equidigital number, since it uses as much as digits as its factorization.

1624412166661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56764762.

The product of its digits is 497664, while the sum is 46.

The spelling of 1624412166661 in words is "one trillion, six hundred twenty-four billion, four hundred twelve million, one hundred sixty-six thousand, six hundred sixty-one".