215225656450436 has 12 divisors (see below), whose sum is σ = 376651892590428. Its totient is φ = 107610829996032.

The previous prime is 215225656450423. The next prime is 215225656450451. The reversal of 215225656450436 is 634054656522512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 145695908047936 + 69529748402500 = 12070456^2 + 8338450^2 .

It is a super-2 number, since 2×215225656450436² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499314941 + ... + 499745796.

It is an arithmetic number, because the mean of its divisors is an integer number (31387657715869).

Almost surely, 2^{215225656450436} is an apocalyptic number.

It is an amenable number.

215225656450436 is a deficient number, since it is larger than the sum of its proper divisors (161426236139992).

215225656450436 is a wasteful number, since it uses less digits than its factorization.

215225656450436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999114598 (or 999114596 counting only the distinct ones).

The product of its (nonzero) digits is 51840000, while the sum is 56.

The spelling of 215225656450436 in words is "two hundred fifteen trillion, two hundred twenty-five billion, six hundred fifty-six million, four hundred fifty thousand, four hundred thirty-six".