101643562564 has 24 divisors (see below), whose sum is σ = 189380115288. Its totient is φ = 47567992320.

The previous prime is 101643562549. The next prime is 101643562597. The reversal of 101643562564 is 465265346101.

It can be written as a sum of positive squares in 4 ways, for example, as 17891202564 + 83752360000 = 133758^2 + 289400^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 101643562564.

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, 4116859 + ... + 4141474.

It is an arithmetic number, because the mean of its divisors is an integer number (7890838137).

Almost surely, 2^101643562564 is an apocalyptic number.

It is an amenable number.

101643562564 is a deficient number, since it is larger than the sum of its proper divisors (87736552724).

101643562564 is a wasteful number, since it uses less digits than its factorization.

101643562564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8258535 (or 8258533 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 101643562564 in words is "one hundred one billion, six hundred forty-three million, five hundred sixty-two thousand, five hundred sixty-four".