3640187855336 has 32 divisors (see below), whose sum is σ = 6840427501440. Its totient is φ = 1816074382848.

The previous prime is 3640187855333. The next prime is 3640187855417. The reversal of 3640187855336 is 6335587810463.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3640187855333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85222961 + ... + 85265663.

It is an arithmetic number, because the mean of its divisors is an integer number (213763359420).

Almost surely, 2^{3640187855336} is an apocalyptic number.

It is an amenable number.

3640187855336 is a deficient number, since it is larger than the sum of its proper divisors (3200239646104).

3640187855336 is a wasteful number, since it uses less digits than its factorization.

3640187855336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65993 (or 65989 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 59.

The spelling of 3640187855336 in words is "three trillion, six hundred forty billion, one hundred eighty-seven million, eight hundred fifty-five thousand, three hundred thirty-six".