21674503010 has 16 divisors (see below), whose sum is σ = 39081731256. Its totient is φ = 8654773248.

The previous prime is 21674503003. The next prime is 21674503013. The reversal of 21674503010 is 1030547612.

It can be written as a sum of positive squares in 4 ways, for example, as 19746151441 + 1928351569 = 140521^2 + 43913^2 .

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21674503013) 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, 1872437 + ... + 1883976.

Almost surely, 2^21674503010 is an apocalyptic number.

21674503010 is a deficient number, since it is larger than the sum of its proper divisors (17407228246).

21674503010 is a wasteful number, since it uses less digits than its factorization.

21674503010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756997.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 21674503010 in words is "twenty-one billion, six hundred seventy-four million, five hundred three thousand, ten".