147979865772 has 72 divisors (see below), whose sum is σ = 394384827200. Its totient is φ = 46654856928.

The previous prime is 147979865741. The next prime is 147979865773. The reversal of 147979865772 is 277568979741.

147979865772 is a `hidden beast` number, since 1 + 47 + 9 + 7 + 9 + 8 + 6 + 577 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 147979865772.

It is not an unprimeable number, because it can be changed into a prime (147979865773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248643 + ... + 598149.

Almost surely, 2^147979865772 is an apocalyptic number.

147979865772 is a gapful number since it is divisible by the number (12) 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 147979865772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197192413600).

147979865772 is an abundant number, since it is smaller than the sum of its proper divisors (246404961428).

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

147979865772 is a wasteful number, since it uses less digits than its factorization.

147979865772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350155 (or 350150 counting only the distinct ones).

The product of its digits is 373403520, while the sum is 72.

The spelling of 147979865772 in words is "one hundred forty-seven billion, nine hundred seventy-nine million, eight hundred sixty-five thousand, seven hundred seventy-two".