21621612535035 has 32 divisors (see below), whose sum is σ = 34643057376000. Its totient is φ = 11515369090176.

The previous prime is 21621612535021. The next prime is 21621612535087. The reversal of 21621612535035 is 53053521612612.

It is not a de Polignac number, because 21621612535035 - 2⁹ = 21621612534523 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345698796 + ... + 345761334.

It is an arithmetic number, because the mean of its divisors is an integer number (1082595543000).

Almost surely, 2^{21621612535035} is an apocalyptic number.

21621612535035 is a deficient number, since it is larger than the sum of its proper divisors (13021444840965).

21621612535035 is a wasteful number, since it uses less digits than its factorization.

21621612535035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94475.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 21621612535035 in words is "twenty-one trillion, six hundred twenty-one billion, six hundred twelve million, five hundred thirty-five thousand, thirty-five".