21411528974 has 16 divisors (see below), whose sum is σ = 35891611056. Its totient is φ = 9495134400.

The previous prime is 21411528959. The next prime is 21411528991. The reversal of 21411528974 is 47982511412.

It is a happy number.

It is a congruent number.

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, 11868017 + ... + 11869820.

It is an arithmetic number, because the mean of its divisors is an integer number (2243225691).

Almost surely, 2^21411528974 is an apocalyptic number.

21411528974 is a deficient number, since it is larger than the sum of its proper divisors (14480082082).

21411528974 is a wasteful number, since it uses less digits than its factorization.

21411528974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23737891.

The product of its digits is 161280, while the sum is 44.

The spelling of 21411528974 in words is "twenty-one billion, four hundred eleven million, five hundred twenty-eight thousand, nine hundred seventy-four".