139545664593 has 4 divisors (see below), whose sum is σ = 186060886128. Its totient is φ = 93030443060.

The previous prime is 139545664589. The next prime is 139545664637. The reversal of 139545664593 is 395466545931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139545664593 - 2² = 139545664589 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139545664693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23257610763 + ... + 23257610768.

It is an arithmetic number, because the mean of its divisors is an integer number (46515221532).

Almost surely, 2^139545664593 is an apocalyptic number.

It is an amenable number.

139545664593 is a deficient number, since it is larger than the sum of its proper divisors (46515221535).

139545664593 is an equidigital number, since it uses as much as digits as its factorization.

139545664593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46515221534.

The product of its digits is 52488000, while the sum is 60.

The spelling of 139545664593 in words is "one hundred thirty-nine billion, five hundred forty-five million, six hundred sixty-four thousand, five hundred ninety-three".