42150505661 has 16 divisors (see below), whose sum is σ = 47519766528. Its totient is φ = 37040295600.

The previous prime is 42150505637. The next prime is 42150505751. The reversal of 42150505661 is 16650505124.

It is not a de Polignac number, because 42150505661 - 2³⁴ = 24970636477 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 (42150505601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231110 + ... + 371096.

It is an arithmetic number, because the mean of its divisors is an integer number (2969985408).

Almost surely, 2^42150505661 is an apocalyptic number.

It is an amenable number.

42150505661 is a deficient number, since it is larger than the sum of its proper divisors (5369260867).

42150505661 is a wasteful number, since it uses less digits than its factorization.

42150505661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140912.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 42150505661 in words is "forty-two billion, one hundred fifty million, five hundred five thousand, six hundred sixty-one".