42661263615 has 16 divisors (see below), whose sum is σ = 72273199968. Its totient is φ = 21414281216.

The previous prime is 42661263613. The next prime is 42661263677. The reversal of 42661263615 is 51636216624.

It is a cyclic number.

It is not a de Polignac number, because 42661263615 - 2¹ = 42661263613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42661263611) 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, 83649282 + ... + 83649791.

It is an arithmetic number, because the mean of its divisors is an integer number (4517074998).

Almost surely, 2^42661263615 is an apocalyptic number.

42661263615 is a deficient number, since it is larger than the sum of its proper divisors (29611936353).

42661263615 is a wasteful number, since it uses less digits than its factorization.

42661263615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167299098.

The product of its digits is 311040, while the sum is 42.

The spelling of 42661263615 in words is "forty-two billion, six hundred sixty-one million, two hundred sixty-three thousand, six hundred fifteen".