46665605721 has 16 divisors (see below), whose sum is σ = 71201510784. Its totient is φ = 26631554304.

The previous prime is 46665605711. The next prime is 46665605759. The reversal of 46665605721 is 12750656664.

It is not a de Polignac number, because 46665605721 - 2⁹ = 46665605209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (46665605711) 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, 1421136 + ... + 1453601.

It is an arithmetic number, because the mean of its divisors is an integer number (4450094424).

Almost surely, 2^46665605721 is an apocalyptic number.

It is an amenable number.

46665605721 is a deficient number, since it is larger than the sum of its proper divisors (24535905063).

46665605721 is a wasteful number, since it uses less digits than its factorization.

46665605721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875520.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 46665605721 in words is "forty-six billion, six hundred sixty-five million, six hundred five thousand, seven hundred twenty-one".