36551221430 has 16 divisors (see below), whose sum is σ = 65795551344. Its totient is φ = 14619743520.

The previous prime is 36551221423. The next prime is 36551221471. The reversal of 36551221430 is 3412215563.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140924 + ... + 304896.

It is an arithmetic number, because the mean of its divisors is an integer number (4112221959).

Almost surely, 2^36551221430 is an apocalyptic number.

36551221430 is a deficient number, since it is larger than the sum of its proper divisors (29244329914).

36551221430 is a wasteful number, since it uses less digits than its factorization.

36551221430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186271.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 36551221430 its reverse (3412215563), we get a palindrome (39963436993).

The spelling of 36551221430 in words is "thirty-six billion, five hundred fifty-one million, two hundred twenty-one thousand, four hundred thirty".