139178403840 has 384 divisors, whose sum is σ = 510892462080. Its totient is φ = 31685935104.

The previous prime is 139178403809. The next prime is 139178403853. The reversal of 139178403840 is 48304871931.

It is a happy number.

139178403840 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 139178403840.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60855177 + ... + 60857463.

It is an arithmetic number, because the mean of its divisors is an integer number (1330449120).

Almost surely, 2^139178403840 is an apocalyptic number.

139178403840 is a gapful number since it is divisible by the number (10) 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 139178403840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255446231040).

139178403840 is an abundant number, since it is smaller than the sum of its proper divisors (371714058240).

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

139178403840 is a wasteful number, since it uses less digits than its factorization.

139178403840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607 (or 2587 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 139178403840 in words is "one hundred thirty-nine billion, one hundred seventy-eight million, four hundred three thousand, eight hundred forty".