7157215090 has 8 divisors (see below), whose sum is σ = 12882987180. Its totient is φ = 2862886032.

The previous prime is 7157215073. The next prime is 7157215103. The reversal of 7157215090 is 905127517.

7157215090 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7123191201 + 34023889 = 84399^2 + 5833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357860745 + ... + 357860764.

Almost surely, 2^7157215090 is an apocalyptic number.

7157215090 is a deficient number, since it is larger than the sum of its proper divisors (5725772090).

7157215090 is a wasteful number, since it uses less digits than its factorization.

7157215090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715721516.

The product of its (nonzero) digits is 22050, while the sum is 37.

The square root of 7157215090 is about 84600.3255903900. The cubic root of 7157215090 is about 1927.1463182346.

The spelling of 7157215090 in words is "seven billion, one hundred fifty-seven million, two hundred fifteen thousand, ninety".