140051439906 has 16 divisors (see below), whose sum is σ = 320117577024. Its totient is φ = 40014697104.

The previous prime is 140051439863. The next prime is 140051439907. The reversal of 140051439906 is 609934150041.

It is a super-3 number, since 3×140051439906³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3334558093 = 140051439906 / (1 + 4 + 0 + 0 + 5 + 1 + 4 + 3 + 9 + 9 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (140051439907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1667279005 + ... + 1667279088.

It is an arithmetic number, because the mean of its divisors is an integer number (20007348564).

Almost surely, 2^140051439906 is an apocalyptic number.

140051439906 is an abundant number, since it is smaller than the sum of its proper divisors (180066137118).

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

140051439906 is a wasteful number, since it uses less digits than its factorization.

140051439906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334558105.

The product of its (nonzero) digits is 116640, while the sum is 42.

Adding to 140051439906 its reverse (609934150041), we get a palindrome (749985589947).

The spelling of 140051439906 in words is "one hundred forty billion, fifty-one million, four hundred thirty-nine thousand, nine hundred six".