139378644236388 has 384 divisors, whose sum is σ = 355595119165440. Its totient is φ = 42361998243840.

The previous prime is 139378644236347. The next prime is 139378644236431. The reversal of 139378644236388 is 883632446873931.

139378644236388 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139378644236388² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 180308724370 + ... + 180308725142.

It is an arithmetic number, because the mean of its divisors is an integer number (926028956160).

Almost surely, 2^{139378644236388} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139378644236388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177797559582720).

139378644236388 is an abundant number, since it is smaller than the sum of its proper divisors (216216474929052).

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

139378644236388 is a wasteful number, since it uses less digits than its factorization.

139378644236388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827 (or 1825 counting only the distinct ones).

The product of its digits is 3009871872, while the sum is 75.

The spelling of 139378644236388 in words is "one hundred thirty-nine trillion, three hundred seventy-eight billion, six hundred forty-four million, two hundred thirty-six thousand, three hundred eighty-eight".