7718358212 has 12 divisors (see below), whose sum is σ = 13872184620. Its totient is φ = 3754876896.

The previous prime is 7718358211. The next prime is 7718358247. The reversal of 7718358212 is 2128538177.

It can be written as a sum of positive squares in 2 ways, for example, as 4018799236 + 3699558976 = 63394^2 + 60824^2 .

It is not an unprimeable number, because it can be changed into a prime (7718358211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26075387 + ... + 26075682.

It is an arithmetic number, because the mean of its divisors is an integer number (1156015385).

Almost surely, 2^7718358212 is an apocalyptic number.

It is an amenable number.

7718358212 is a deficient number, since it is larger than the sum of its proper divisors (6153826408).

7718358212 is a wasteful number, since it uses less digits than its factorization.

7718358212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52151110 (or 52151108 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 7718358212 is about 87854.1872195059. The cubic root of 7718358212 is about 1976.2489103987.

The spelling of 7718358212 in words is "seven billion, seven hundred eighteen million, three hundred fifty-eight thousand, two hundred twelve".