646154061332227 has 16 divisors (see below), whose sum is σ = 740306445038784. Its totient is φ = 552462854400000.

The previous prime is 646154061332209. The next prime is 646154061332237. The reversal of 646154061332227 is 722233160451646.

It is a cyclic number.

It is not a de Polignac number, because 646154061332227 - 2¹⁵ = 646154061299459 is a prime.

It is a super-2 number, since 2×646154061332227² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646154061332237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1188383227 + ... + 1188926827.

It is an arithmetic number, because the mean of its divisors is an integer number (46269152814924).

Almost surely, 2^{646154061332227} is an apocalyptic number.

646154061332227 is a deficient number, since it is larger than the sum of its proper divisors (94152383706557).

646154061332227 is a wasteful number, since it uses less digits than its factorization.

646154061332227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967470.

The product of its (nonzero) digits is 8709120, while the sum is 52.

The spelling of 646154061332227 in words is "six hundred forty-six trillion, one hundred fifty-four billion, sixty-one million, three hundred thirty-two thousand, two hundred twenty-seven".