5012156721 has 32 divisors (see below), whose sum is σ = 7858795392. Its totient is φ = 2801295360.

The previous prime is 5012156719. The next prime is 5012156759. The reversal of 5012156721 is 1276512105.

5012156721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5012156721 - 2¹ = 5012156719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5012156621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489571 + ... + 499703.

It is an arithmetic number, because the mean of its divisors is an integer number (245587356).

Almost surely, 2^5012156721 is an apocalyptic number.

It is an amenable number.

5012156721 is a deficient number, since it is larger than the sum of its proper divisors (2846638671).

5012156721 is a wasteful number, since it uses less digits than its factorization.

5012156721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11313.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 5012156721 is about 70796.5869304446. The cubic root of 5012156721 is about 1711.3606717346.

Adding to 5012156721 its reverse (1276512105), we get a palindrome (6288668826).

The spelling of 5012156721 in words is "five billion, twelve million, one hundred fifty-six thousand, seven hundred twenty-one".