15640200236 has 12 divisors (see below), whose sum is σ = 27471349920. Its totient is φ = 7791243120.

The previous prime is 15640200211. The next prime is 15640200271. The reversal of 15640200236 is 63200204651.

It is a junction number, because it is equal to n+sod(n) for n = 15640200199 and 15640200208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7213031 + ... + 7215198.

It is an arithmetic number, because the mean of its divisors is an integer number (2289279160).

Almost surely, 2^15640200236 is an apocalyptic number.

It is an amenable number.

15640200236 is a deficient number, since it is larger than the sum of its proper divisors (11831149684).

15640200236 is a wasteful number, since it uses less digits than its factorization.

15640200236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14428504 (or 14428502 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 15640200236 its reverse (63200204651), we get a palindrome (78840404887).

The spelling of 15640200236 in words is "fifteen billion, six hundred forty million, two hundred thousand, two hundred thirty-six".