21074521370106 has 16 divisors (see below), whose sum is σ = 43129253037024. Its totient is φ = 6861472073904.

The previous prime is 21074521370069. The next prime is 21074521370129. The reversal of 21074521370106 is 60107312547012.

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, 40842095421 + ... + 40842095936.

It is an arithmetic number, because the mean of its divisors is an integer number (2695578314814).

Almost surely, 2^{21074521370106} is an apocalyptic number.

21074521370106 is an abundant number, since it is smaller than the sum of its proper divisors (22054731666918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21074521370106 is a wasteful number, since it uses less digits than its factorization.

21074521370106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81684191405.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 21074521370106 in words is "twenty-one trillion, seventy-four billion, five hundred twenty-one million, three hundred seventy thousand, one hundred six".