4149589842021 has 32 divisors (see below), whose sum is σ = 5990462779392. Its totient is φ = 2539881812160.

The previous prime is 4149589841993. The next prime is 4149589842037. The reversal of 4149589842021 is 1202489859414.

It is not a de Polignac number, because 4149589842021 - 2³⁸ = 3874711935077 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4149589842061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5246266 + ... + 5985188.

It is an arithmetic number, because the mean of its divisors is an integer number (187201961856).

Almost surely, 2^{4149589842021} is an apocalyptic number.

It is an amenable number.

4149589842021 is a deficient number, since it is larger than the sum of its proper divisors (1840872937371).

4149589842021 is a wasteful number, since it uses less digits than its factorization.

4149589842021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739713.

The product of its (nonzero) digits is 6635520, while the sum is 57.

The spelling of 4149589842021 in words is "four trillion, one hundred forty-nine billion, five hundred eighty-nine million, eight hundred forty-two thousand, twenty-one".