139447572768 has 432 divisors, whose sum is σ = 481141140480. Its totient is φ = 38151171072.

The previous prime is 139447572767. The next prime is 139447572773. The reversal of 139447572768 is 867275744931.

139447572768 is a `hidden beast` number, since 1 + 3 + 94 + 475 + 7 + 2 + 76 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (139447572767) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51973155 + ... + 51975837.

It is an arithmetic number, because the mean of its divisors is an integer number (1113752640).

Almost surely, 2^139447572768 is an apocalyptic number.

139447572768 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 139447572768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240570570240).

139447572768 is an abundant number, since it is smaller than the sum of its proper divisors (341693567712).

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

139447572768 is a wasteful number, since it uses less digits than its factorization.

139447572768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869 (or 2851 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 63.

The spelling of 139447572768 in words is "one hundred thirty-nine billion, four hundred forty-seven million, five hundred seventy-two thousand, seven hundred sixty-eight".