5185076721 has 64 divisors (see below), whose sum is σ = 8356089600. Its totient is φ = 2822758400.

The previous prime is 5185076717. The next prime is 5185076723. The reversal of 5185076721 is 1276705815.

It is not a de Polignac number, because 5185076721 - 2² = 5185076717 is a prime.

It is a super-2 number, since 2×5185076721² = 53770041205312223682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5185076723) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1446151 + ... + 1449731.

It is an arithmetic number, because the mean of its divisors is an integer number (130563900).

Almost surely, 2^5185076721 is an apocalyptic number.

5185076721 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5185076721 is a deficient number, since it is larger than the sum of its proper divisors (3171012879).

5185076721 is a wasteful number, since it uses less digits than its factorization.

5185076721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730.

The product of its (nonzero) digits is 117600, while the sum is 42.

The square root of 5185076721 is about 72007.4768409503. The cubic root of 5185076721 is about 1730.8192986358.

The spelling of 5185076721 in words is "five billion, one hundred eighty-five million, seventy-six thousand, seven hundred twenty-one".