42479432665 has 24 divisors (see below), whose sum is σ = 53316212040. Its totient is φ = 32488794624.

The previous prime is 42479432663. The next prime is 42479432687. The reversal of 42479432665 is 56623497424.

It can be written as a sum of positive squares in 4 ways, for example, as 727866441 + 41751566224 = 26979^2 + 204332^2 .

It is not a de Polignac number, because 42479432665 - 2¹ = 42479432663 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42479432663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7490451 + ... + 7496119.

It is an arithmetic number, because the mean of its divisors is an integer number (2221508835).

Almost surely, 2^42479432665 is an apocalyptic number.

It is an amenable number.

42479432665 is a deficient number, since it is larger than the sum of its proper divisors (10836779375).

42479432665 is a wasteful number, since it uses less digits than its factorization.

42479432665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553 (or 8530 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 52.

The spelling of 42479432665 in words is "forty-two billion, four hundred seventy-nine million, four hundred thirty-two thousand, six hundred sixty-five".