42150266661 has 4 divisors (see below), whose sum is σ = 56200355552. Its totient is φ = 28100177772.

The previous prime is 42150266591. The next prime is 42150266663. The reversal of 42150266661 is 16666205124.

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 42150266661 - 2⁹ = 42150266149 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 (42150266663) 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, 7025044441 + ... + 7025044446.

It is an arithmetic number, because the mean of its divisors is an integer number (14050088888).

Almost surely, 2^42150266661 is an apocalyptic number.

It is an amenable number.

42150266661 is a deficient number, since it is larger than the sum of its proper divisors (14050088891).

42150266661 is a wasteful number, since it uses less digits than its factorization.

42150266661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14050088890.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 42150266661 in words is "forty-two billion, one hundred fifty million, two hundred sixty-six thousand, six hundred sixty-one".