139394661120 has 1296 divisors, whose sum is σ = 596591993088. Its totient is φ = 29731553280.

The previous prime is 139394661089. The next prime is 139394661151. The reversal of 139394661120 is 21166493931.

139394661120 is a `hidden beast` number, since 1 + 3 + 9 + 3 + 9 + 4 + 6 + 611 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (139394661089) and next prime (139394661151).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 492560499 + ... + 492560781.

It is an arithmetic number, because the mean of its divisors is an integer number (460333328).

Almost surely, 2^139394661120 is an apocalyptic number.

139394661120 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 139394661120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298295996544).

139394661120 is an abundant number, since it is smaller than the sum of its proper divisors (457197331968).

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

139394661120 is a wasteful number, since it uses less digits than its factorization.

139394661120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 139394661120 in words is "one hundred thirty-nine billion, three hundred ninety-four million, six hundred sixty-one thousand, one hundred twenty".