42351431666 has 8 divisors (see below), whose sum is σ = 63751625904. Its totient is φ = 21100889700.

The previous prime is 42351431657. The next prime is 42351431671. The reversal of 42351431666 is 66613415324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37412360 + ... + 37413491.

It is an arithmetic number, because the mean of its divisors is an integer number (7968953238).

Almost surely, 2^42351431666 is an apocalyptic number.

42351431666 is a deficient number, since it is larger than the sum of its proper divisors (21400194238).

42351431666 is a wasteful number, since it uses less digits than its factorization.

42351431666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74826136.

The product of its digits is 311040, while the sum is 41.

The spelling of 42351431666 in words is "forty-two billion, three hundred fifty-one million, four hundred thirty-one thousand, six hundred sixty-six".