35821047985921 has 8 divisors (see below), whose sum is σ = 39275869875264. Its totient is φ = 32399286593520.

The previous prime is 35821047985871. The next prime is 35821047985991. The reversal of 35821047985921 is 12958974012853.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 35821047985921 - 2²⁹ = 35820511115009 is a prime.

It is a super-2 number, since 2×35821047985921² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (35821047985991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8265121965 + ... + 8265126298.

It is an arithmetic number, because the mean of its divisors is an integer number (4909483734408).

Almost surely, 2^{35821047985921} is an apocalyptic number.

It is an amenable number.

35821047985921 is a deficient number, since it is larger than the sum of its proper divisors (3454821889343).

35821047985921 is a wasteful number, since it uses less digits than its factorization.

35821047985921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16530248471.

The product of its (nonzero) digits is 43545600, while the sum is 64.

The spelling of 35821047985921 in words is "thirty-five trillion, eight hundred twenty-one billion, forty-seven million, nine hundred eighty-five thousand, nine hundred twenty-one".