139178403841 has 4 divisors (see below), whose sum is σ = 139183969284. Its totient is φ = 139172838400.

The previous prime is 139178403809. The next prime is 139178403853. The reversal of 139178403841 is 148304871931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31869747441 + 107308656400 = 178521^2 + 327580^2 .

It is a cyclic number.

It is not a de Polignac number, because 139178403841 - 2⁵ = 139178403809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139178403041) 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, 2745040 + ... + 2795281.

It is an arithmetic number, because the mean of its divisors is an integer number (34795992321).

Almost surely, 2^139178403841 is an apocalyptic number.

It is an amenable number.

139178403841 is a deficient number, since it is larger than the sum of its proper divisors (5565443).

139178403841 is an equidigital number, since it uses as much as digits as its factorization.

139178403841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565442.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 139178403841 in words is "one hundred thirty-nine billion, one hundred seventy-eight million, four hundred three thousand, eight hundred forty-one".