5072176721556 has 108 divisors (see below), whose sum is σ = 14917576613940. Its totient is φ = 1448905570560.

The previous prime is 5072176721531. The next prime is 5072176721561. The reversal of 5072176721556 is 6551276712705.

5072176721556 is a `hidden beast` number, since 5 + 0 + 7 + 2 + 1 + 7 + 67 + 21 + 556 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 263717169156 + 4808459552400 = 513534^2 + 2192820^2 .

It is a super-2 number, since 2×5072176721556² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8679930 + ... + 9245838.

Almost surely, 2^{5072176721556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5072176721556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7458788306970).

5072176721556 is an abundant number, since it is smaller than the sum of its proper divisors (9845399892384).

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

5072176721556 is a wasteful number, since it uses less digits than its factorization.

5072176721556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571014 (or 571002 counting only the distinct ones).

The product of its (nonzero) digits is 6174000, while the sum is 54.

The spelling of 5072176721556 in words is "five trillion, seventy-two billion, one hundred seventy-six million, seven hundred twenty-one thousand, five hundred fifty-six".