139955740563 has 4 divisors (see below), whose sum is σ = 186607654088. Its totient is φ = 93303827040.

The previous prime is 139955740553. The next prime is 139955740567. The reversal of 139955740563 is 365047559931.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 139955740563 - 2⁶ = 139955740499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139955740567) 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, 23325956758 + ... + 23325956763.

It is an arithmetic number, because the mean of its divisors is an integer number (46651913522).

Almost surely, 2^139955740563 is an apocalyptic number.

139955740563 is a deficient number, since it is larger than the sum of its proper divisors (46651913525).

139955740563 is an equidigital number, since it uses as much as digits as its factorization.

139955740563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46651913524.

The product of its (nonzero) digits is 15309000, while the sum is 57.

The spelling of 139955740563 in words is "one hundred thirty-nine billion, nine hundred fifty-five million, seven hundred forty thousand, five hundred sixty-three".