21621411422470 has 32 divisors (see below), whose sum is σ = 38968725580416. Its totient is φ = 8637415987200.

The previous prime is 21621411422411. The next prime is 21621411422489. The reversal of 21621411422470 is 7422411412612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47885202 + ... + 48334618.

It is an arithmetic number, because the mean of its divisors is an integer number (1217772674388).

Almost surely, 2^{21621411422470} is an apocalyptic number.

21621411422470 is a deficient number, since it is larger than the sum of its proper divisors (17347314157946).

21621411422470 is a wasteful number, since it uses less digits than its factorization.

21621411422470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455616.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 21621411422470 in words is "twenty-one trillion, six hundred twenty-one billion, four hundred eleven million, four hundred twenty-two thousand, four hundred seventy".