21870996410 has 16 divisors (see below), whose sum is σ = 40725304200. Its totient is φ = 8446729536.

The previous prime is 21870996397. The next prime is 21870996431. The reversal of 21870996410 is 1469907812.

It can be written as a sum of positive squares in 4 ways, for example, as 21630467329 + 240529081 = 147073^2 + 15509^2 .

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, 37708325 + ... + 37708904.

Almost surely, 2^21870996410 is an apocalyptic number.

21870996410 is a deficient number, since it is larger than the sum of its proper divisors (18854307790).

21870996410 is a wasteful number, since it uses less digits than its factorization.

21870996410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75417265.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 21870996410 in words is "twenty-one billion, eight hundred seventy million, nine hundred ninety-six thousand, four hundred ten".