40520255013 has 12 divisors (see below), whose sum is σ = 66890579808. Its totient is φ = 23154431400.

The previous prime is 40520255003. The next prime is 40520255033. The reversal of 40520255013 is 31055202504.

It is a happy number.

40520255013 is a `hidden beast` number, since 405 + 2 + 0 + 255 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 40520255013 - 2⁶ = 40520254949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520255003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321589263 + ... + 321589388.

It is an arithmetic number, because the mean of its divisors is an integer number (5574214984).

Almost surely, 2^40520255013 is an apocalyptic number.

It is an amenable number.

40520255013 is a deficient number, since it is larger than the sum of its proper divisors (26370324795).

40520255013 is a wasteful number, since it uses less digits than its factorization.

40520255013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643178664 (or 643178661 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 40520255013 its reverse (31055202504), we get a palindrome (71575457517).

The spelling of 40520255013 in words is "forty billion, five hundred twenty million, two hundred fifty-five thousand, thirteen".