40520321794395 has 96 divisors (see below), whose sum is σ = 71573630356800. Its totient is φ = 21203365248000.

The previous prime is 40520321794391. The next prime is 40520321794409. The reversal of 40520321794395 is 59349712302504.

It is a happy number.

40520321794395 is a `hidden beast` number, since 4 + 0 + 5 + 2 + 0 + 32 + 179 + 439 + 5 = 666.

40520321794395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40520321794395 - 2² = 40520321794391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40520321794391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 422087061 + ... + 422183049.

It is an arithmetic number, because the mean of its divisors is an integer number (745558649550).

Almost surely, 2^{40520321794395} is an apocalyptic number.

40520321794395 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40520321794395 is a deficient number, since it is larger than the sum of its proper divisors (31053308562405).

40520321794395 is a wasteful number, since it uses less digits than its factorization.

40520321794395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96941 (or 96938 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 40520321794395 in words is "forty trillion, five hundred twenty billion, three hundred twenty-one million, seven hundred ninety-four thousand, three hundred ninety-five".