4040521045 has 16 divisors (see below), whose sum is σ = 5301381312. Its totient is φ = 2931909760.

The previous prime is 4040521033. The next prime is 4040521061. The reversal of 4040521045 is 5401250404.

It is a happy number.

It is not a de Polignac number, because 4040521045 - 2²⁹ = 3503650133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58552 + ... + 107281.

It is an arithmetic number, because the mean of its divisors is an integer number (331336332).

Almost surely, 2^4040521045 is an apocalyptic number.

It is an amenable number.

4040521045 is a deficient number, since it is larger than the sum of its proper divisors (1260860267).

4040521045 is a wasteful number, since it uses less digits than its factorization.

4040521045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166292.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 4040521045 is about 63565.0929756262. The cubic root of 4040521045 is about 1592.7433153210.

Adding to 4040521045 its reverse (5401250404), we get a palindrome (9441771449).

The spelling of 4040521045 in words is "four billion, forty million, five hundred twenty-one thousand, forty-five".