646154047733106 has 16 divisors (see below), whose sum is σ = 1409790649599648. Its totient is φ = 195804256888800.

The previous prime is 646154047733099. The next prime is 646154047733107. The reversal of 646154047733106 is 601337740451646.

It is not an unprimeable number, because it can be changed into a prime (646154047733107) 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, 4895106422155 + ... + 4895106422286.

It is an arithmetic number, because the mean of its divisors is an integer number (88111915599978).

Almost surely, 2^{646154047733106} is an apocalyptic number.

646154047733106 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

646154047733106 is an abundant number, since it is smaller than the sum of its proper divisors (763636601866542).

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

646154047733106 is a wasteful number, since it uses less digits than its factorization.

646154047733106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9790212844457.

The product of its (nonzero) digits is 30481920, while the sum is 57.

The spelling of 646154047733106 in words is "six hundred forty-six trillion, one hundred fifty-four billion, forty-seven million, seven hundred thirty-three thousand, one hundred six".