4535870671821 has 16 divisors (see below), whose sum is σ = 6366189680640. Its totient is φ = 2864735492400.

The previous prime is 4535870671817. The next prime is 4535870671831. The reversal of 4535870671821 is 1281760785354.

It is not a de Polignac number, because 4535870671821 - 2² = 4535870671817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4535870671831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8017156 + ... + 8564258.

It is an arithmetic number, because the mean of its divisors is an integer number (397886855040).

Almost surely, 2^{4535870671821} is an apocalyptic number.

It is an amenable number.

4535870671821 is a deficient number, since it is larger than the sum of its proper divisors (1830319008819).

4535870671821 is a wasteful number, since it uses less digits than its factorization.

4535870671821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692576.

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 4535870671821 in words is "four trillion, five hundred thirty-five billion, eight hundred seventy million, six hundred seventy-one thousand, eight hundred twenty-one".