139878105901 has 16 divisors (see below), whose sum is σ = 145298739520. Its totient is φ = 134561347200.

The previous prime is 139878105833. The next prime is 139878105919. The reversal of 139878105901 is 109501878931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 139878105901 - 2¹¹ = 139878103853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139878102901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2194126 + ... + 2256976.

It is an arithmetic number, because the mean of its divisors is an integer number (9081171220).

Almost surely, 2^139878105901 is an apocalyptic number.

It is an amenable number.

139878105901 is a deficient number, since it is larger than the sum of its proper divisors (5420633619).

139878105901 is an equidigital number, since it uses as much as digits as its factorization.

139878105901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63676.

The product of its (nonzero) digits is 544320, while the sum is 52.

The spelling of 139878105901 in words is "one hundred thirty-nine billion, eight hundred seventy-eight million, one hundred five thousand, nine hundred one".