76072172832 has 72 divisors (see below), whose sum is σ = 229055564556. Its totient is φ = 23865778176.

The previous prime is 76072172821. The next prime is 76072172833. The reversal of 76072172832 is 23827127067.

76072172832 is a `hidden beast` number, since 7 + 607 + 2 + 1 + 7 + 2 + 8 + 32 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 65190344976 + 10881827856 = 255324^2 + 104316^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (76072172833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7763913 + ... + 7773704.

Almost surely, 2^76072172832 is an apocalyptic number.

76072172832 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

76072172832 is an abundant number, since it is smaller than the sum of its proper divisors (152983391724).

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

76072172832 is a wasteful number, since it uses less digits than its factorization.

76072172832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15537650 (or 15537639 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

Adding to 76072172832 its reverse (23827127067), we get a palindrome (99899299899).

The spelling of 76072172832 in words is "seventy-six billion, seventy-two million, one hundred seventy-two thousand, eight hundred thirty-two".