21006474601 has 16 divisors (see below), whose sum is σ = 24113700864. Its totient is φ = 17925912144.

The previous prime is 21006474523. The next prime is 21006474617. The reversal of 21006474601 is 10647460012.

It is not a de Polignac number, because 21006474601 - 2¹³ = 21006466409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21006474641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4502596 + ... + 4507258.

It is an arithmetic number, because the mean of its divisors is an integer number (1507106304).

Almost surely, 2^21006474601 is an apocalyptic number.

It is an amenable number.

21006474601 is a deficient number, since it is larger than the sum of its proper divisors (3107226263).

21006474601 is a wasteful number, since it uses less digits than its factorization.

21006474601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380.

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 21006474601 in words is "twenty-one billion, six million, four hundred seventy-four thousand, six hundred one".