139017057408 has 512 divisors, whose sum is σ = 445633920000. Its totient is φ = 43058635776.

The previous prime is 139017057367. The next prime is 139017057437. The reversal of 139017057408 is 804750710931.

139017057408 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 1 + 70 + 574 + 0 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 313808035 + ... + 313808477.

It is an arithmetic number, because the mean of its divisors is an integer number (870378750).

Almost surely, 2^139017057408 is an apocalyptic number.

139017057408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139017057408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222816960000).

139017057408 is an abundant number, since it is smaller than the sum of its proper divisors (306616862592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139017057408 is an frugal number, since it uses more digits than its factorization.

139017057408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 139017057408 in words is "one hundred thirty-nine billion, seventeen million, fifty-seven thousand, four hundred eight".