139540307863 has 8 divisors (see below), whose sum is σ = 155938615056. Its totient is φ = 123760804800.

The previous prime is 139540307839. The next prime is 139540307867. The reversal of 139540307863 is 368703045931.

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 139540307863 - 2⁹ = 139540307351 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 (139540307867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154700556 + ... + 154701457.

It is an arithmetic number, because the mean of its divisors is an integer number (19492326882).

Almost surely, 2^139540307863 is an apocalyptic number.

139540307863 is a deficient number, since it is larger than the sum of its proper divisors (16398307193).

139540307863 is a wasteful number, since it uses less digits than its factorization.

139540307863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309402065.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 139540307863 in words is "one hundred thirty-nine billion, five hundred forty million, three hundred seven thousand, eight hundred sixty-three".