6444621150128 has 40 divisors (see below), whose sum is σ = 14274558988800. Its totient is φ = 2761143117120.

The previous prime is 6444621150119. The next prime is 6444621150193. The reversal of 6444621150128 is 8210511264446.

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, 8351528 + ... + 9090503.

It is an arithmetic number, because the mean of its divisors is an integer number (356863974720).

Almost surely, 2^{6444621150128} is an apocalyptic number.

It is an amenable number.

6444621150128 is an abundant number, since it is smaller than the sum of its proper divisors (7829937838672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6444621150128 is a wasteful number, since it uses less digits than its factorization.

6444621150128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17445345 (or 17445339 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 6444621150128 in words is "six trillion, four hundred forty-four billion, six hundred twenty-one million, one hundred fifty thousand, one hundred twenty-eight".