64100043 has 24 divisors (see below), whose sum is σ = 106080000. Its totient is φ = 36537264.

The previous prime is 64099999. The next prime is 64100083. The reversal of 64100043 is 34000146.

It is not a de Polignac number, because 64100043 - 2⁹ = 64099531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64099989 and 64100025.

It is not an unprimeable number, because it can be changed into a prime (64100083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30418 + ... + 32456.

It is an arithmetic number, because the mean of its divisors is an integer number (4420000).

Almost surely, 2^64100043 is an apocalyptic number.

64100043 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

64100043 is a deficient number, since it is larger than the sum of its proper divisors (41979957).

64100043 is a wasteful number, since it uses less digits than its factorization.

64100043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551 (or 2548 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 64100043 is about 8006.2502459016. The cubic root of 64100043 is about 400.2083144106.

Adding to 64100043 its reverse (34000146), we get a palindrome (98100189).

The spelling of 64100043 in words is "sixty-four million, one hundred thousand, forty-three".