21481593610 has 32 divisors (see below), whose sum is σ = 40727966400. Its totient is φ = 8135193600.

The previous prime is 21481593593. The next prime is 21481593619. The reversal of 21481593610 is 1639518412.

It is a super-2 number, since 2×21481593610² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21481593619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268881 + ... + 339499.

It is an arithmetic number, because the mean of its divisors is an integer number (1272748950).

Almost surely, 2^21481593610 is an apocalyptic number.

21481593610 is a deficient number, since it is larger than the sum of its proper divisors (19246372790).

21481593610 is a wasteful number, since it uses less digits than its factorization.

21481593610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72246.

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 21481593610 in words is "twenty-one billion, four hundred eighty-one million, five hundred ninety-three thousand, six hundred ten".