40146045488639 has 4 divisors (see below), whose sum is σ = 42507577576224. Its totient is φ = 37784513401056.

The previous prime is 40146045488561. The next prime is 40146045488683. The reversal of 40146045488639 is 93688454064104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40146045488639 - 2¹⁶ = 40146045423103 is a prime.

It is a super-2 number, since 2×40146045488639² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40146045488239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1180766043767 + ... + 1180766043800.

It is an arithmetic number, because the mean of its divisors is an integer number (10626894394056).

Almost surely, 2^{40146045488639} is an apocalyptic number.

40146045488639 is a deficient number, since it is larger than the sum of its proper divisors (2361532087585).

40146045488639 is a wasteful number, since it uses less digits than its factorization.

40146045488639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361532087584.

The product of its (nonzero) digits is 79626240, while the sum is 62.

The spelling of 40146045488639 in words is "forty trillion, one hundred forty-six billion, forty-five million, four hundred eighty-eight thousand, six hundred thirty-nine".