21620470341406 has 16 divisors (see below), whose sum is σ = 32439359534400. Its totient is φ = 10807350729120.

The previous prime is 21620470341347. The next prime is 21620470341439. The reversal of 21620470341406 is 60414307402612.

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, 260079360 + ... + 260162476.

It is an arithmetic number, because the mean of its divisors is an integer number (2027459970900).

Almost surely, 2^{21620470341406} is an apocalyptic number.

21620470341406 is a deficient number, since it is larger than the sum of its proper divisors (10818889192994).

21620470341406 is a wasteful number, since it uses less digits than its factorization.

21620470341406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116259.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 21620470341406 in words is "twenty-one trillion, six hundred twenty billion, four hundred seventy million, three hundred forty-one thousand, four hundred six".