84026442661 has 4 divisors (see below), whose sum is σ = 96030220192. Its totient is φ = 72022665132.

The previous prime is 84026442649. The next prime is 84026442673. The reversal of 84026442661 is 16624462048.

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 an interprime number because it is at equal distance from previous prime (84026442649) and next prime (84026442673).

It is a cyclic number.

It is not a de Polignac number, because 84026442661 - 2¹⁹ = 84025918373 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 (84026442611) 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, 6001888755 + ... + 6001888768.

It is an arithmetic number, because the mean of its divisors is an integer number (24007555048).

Almost surely, 2^84026442661 is an apocalyptic number.

It is an amenable number.

84026442661 is a deficient number, since it is larger than the sum of its proper divisors (12003777531).

84026442661 is a wasteful number, since it uses less digits than its factorization.

84026442661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12003777530.

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 84026442661 in words is "eighty-four billion, twenty-six million, four hundred forty-two thousand, six hundred sixty-one".