1607021441661 has 4 divisors (see below), whose sum is σ = 2142695255552. Its totient is φ = 1071347627772.

The previous prime is 1607021441551. The next prime is 1607021441737. The reversal of 1607021441661 is 1661441207061.

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 not a de Polignac number, because 1607021441661 - 2⁷ = 1607021441533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1607021443661) 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 3 ways as a sum of consecutive naturals, for example, 267836906941 + ... + 267836906946.

It is an arithmetic number, because the mean of its divisors is an integer number (535673813888).

Almost surely, 2^{1607021441661} is an apocalyptic number.

It is an amenable number.

1607021441661 is a deficient number, since it is larger than the sum of its proper divisors (535673813891).

1607021441661 is an equidigital number, since it uses as much as digits as its factorization.

1607021441661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535673813890.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 1607021441661 in words is "one trillion, six hundred seven billion, twenty-one million, four hundred forty-one thousand, six hundred sixty-one".