6636401740378 has 8 divisors (see below), whose sum is σ = 10032985308672. Its totient is φ = 3292073304156.

The previous prime is 6636401740361. The next prime is 6636401740379. The reversal of 6636401740378 is 8730471046366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6636401740379) 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, 13063782700 + ... + 13063783207.

It is an arithmetic number, because the mean of its divisors is an integer number (1254123163584).

Almost surely, 2^{6636401740378} is an apocalyptic number.

6636401740378 is a deficient number, since it is larger than the sum of its proper divisors (3396583568294).

6636401740378 is a wasteful number, since it uses less digits than its factorization.

6636401740378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26127566036.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 6636401740378 in words is "six trillion, six hundred thirty-six billion, four hundred one million, seven hundred forty thousand, three hundred seventy-eight".