7215007215 has 64 divisors (see below), whose sum is σ = 12895731072. Its totient is φ = 3421440000.

The previous prime is 7215007211. The next prime is 7215007249. The reversal of 7215007215 is 5127005127.

It is not a de Polignac number, because 7215007215 - 2² = 7215007211 is a prime.

It is a super-2 number, since 2×7215007215² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215007211) 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, 723765 + ... + 733665.

It is an arithmetic number, because the mean of its divisors is an integer number (201495798).

Almost surely, 2^7215007215 is an apocalyptic number.

7215007215 is a deficient number, since it is larger than the sum of its proper divisors (5680723857).

7215007215 is a wasteful number, since it uses less digits than its factorization.

7215007215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10060.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 7215007215 is about 84941.1985728951. The cubic root of 7215007215 is about 1932.3194406518.

It can be divided in two parts, 721500 and 7215, that multiplied together give a square (5205622500 = 72150²).

The spelling of 7215007215 in words is "seven billion, two hundred fifteen million, seven thousand, two hundred fifteen".