139486449661920 has 864 divisors, whose sum is σ = 502680811127040. Its totient is φ = 35182429470720.

The previous prime is 139486449661879. The next prime is 139486449661943. The reversal of 139486449661920 is 29166944684931.

It is a happy number.

139486449661920 is a `hidden beast` number, since 1 + 3 + 9 + 48 + 6 + 4 + 496 + 6 + 1 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 26881178686 + ... + 26881183874.

It is an arithmetic number, because the mean of its divisors is an integer number (581806494360).

Almost surely, 2^{139486449661920} is an apocalyptic number.

139486449661920 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 139486449661920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251340405563520).

139486449661920 is an abundant number, since it is smaller than the sum of its proper divisors (363194361465120).

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

139486449661920 is a wasteful number, since it uses less digits than its factorization.

139486449661920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500 (or 5416 counting only the distinct ones).

The product of its (nonzero) digits is 483729408, while the sum is 72.

The spelling of 139486449661920 in words is "one hundred thirty-nine trillion, four hundred eighty-six billion, four hundred forty-nine million, six hundred sixty-one thousand, nine hundred twenty".