68444239542 has 32 divisors (see below), whose sum is σ = 156469689600. Its totient is φ = 19552282848.

The previous prime is 68444239517. The next prime is 68444239547. The reversal of 68444239542 is 24593244486.

It is a super-2 number, since 2×68444239542² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68444239547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130809 + ... + 392427.

It is an arithmetic number, because the mean of its divisors is an integer number (4889677800).

Almost surely, 2^68444239542 is an apocalyptic number.

It is a pronic number, being equal to 261618×261619.

68444239542 is an abundant number, since it is smaller than the sum of its proper divisors (88025450058).

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

68444239542 is a wasteful number, since it uses less digits than its factorization.

68444239542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267860.

The product of its digits is 6635520, while the sum is 51.

The spelling of 68444239542 in words is "sixty-eight billion, four hundred forty-four million, two hundred thirty-nine thousand, five hundred forty-two".