42154335664 has 40 divisors (see below), whose sum is σ = 93387371040. Its totient is φ = 18057312768.

The previous prime is 42154335661. The next prime is 42154335667. The reversal of 42154335664 is 46653345124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42154335661) and next prime (42154335667).

It is a self number, because there is not a number n which added to its sum of digits gives 42154335664.

It is not an unprimeable number, because it can be changed into a prime (42154335661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140772 + ... + 322684.

It is an arithmetic number, because the mean of its divisors is an integer number (2334684276).

Almost surely, 2^42154335664 is an apocalyptic number.

It is an amenable number.

42154335664 is an abundant number, since it is smaller than the sum of its proper divisors (51233035376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42154335664 is a wasteful number, since it uses less digits than its factorization.

42154335664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183997 (or 183991 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 43.

The spelling of 42154335664 in words is "forty-two billion, one hundred fifty-four million, three hundred thirty-five thousand, six hundred sixty-four".