42639497933 has 8 divisors (see below), whose sum is σ = 43634090016. Its totient is φ = 41645041200.

The previous prime is 42639497917. The next prime is 42639497951. The reversal of 42639497933 is 33979493624.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42639497933 - 2⁴ = 42639497917 is a prime.

It is a super-2 number, since 2×42639497933² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42639497233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901043 + ... + 947183.

It is an arithmetic number, because the mean of its divisors is an integer number (5454261252).

Almost surely, 2^42639497933 is an apocalyptic number.

42639497933 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

42639497933 is a deficient number, since it is larger than the sum of its proper divisors (994592083).

42639497933 is a wasteful number, since it uses less digits than its factorization.

42639497933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67675.

The product of its digits is 26453952, while the sum is 59.

The spelling of 42639497933 in words is "forty-two billion, six hundred thirty-nine million, four hundred ninety-seven thousand, nine hundred thirty-three".