139261928798 has 4 divisors (see below), whose sum is σ = 208892893200. Its totient is φ = 69630964398.

The previous prime is 139261928761. The next prime is 139261928821. The reversal of 139261928798 is 897829162931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 897829162931 = 135701 ⋅6616231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34815482198 + ... + 34815482201.

It is an arithmetic number, because the mean of its divisors is an integer number (52223223300).

Almost surely, 2^139261928798 is an apocalyptic number.

139261928798 is a deficient number, since it is larger than the sum of its proper divisors (69630964402).

139261928798 is an equidigital number, since it uses as much as digits as its factorization.

139261928798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69630964401.

The product of its digits is 23514624, while the sum is 65.

The spelling of 139261928798 in words is "one hundred thirty-nine billion, two hundred sixty-one million, nine hundred twenty-eight thousand, seven hundred ninety-eight".