139890518642 has 8 divisors (see below), whose sum is σ = 239812317696. Its totient is φ = 59953079412.

The previous prime is 139890518597. The next prime is 139890518653. The reversal of 139890518642 is 246815098931.

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, 4996089938 + ... + 4996089965.

It is an arithmetic number, because the mean of its divisors is an integer number (29976539712).

Almost surely, 2^139890518642 is an apocalyptic number.

139890518642 is a deficient number, since it is larger than the sum of its proper divisors (99921799054).

139890518642 is an equidigital number, since it uses as much as digits as its factorization.

139890518642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9992179912.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 139890518642 in words is "one hundred thirty-nine billion, eight hundred ninety million, five hundred eighteen thousand, six hundred forty-two".