400540525245321 has 16 divisors (see below), whose sum is σ = 540504254735424. Its totient is φ = 263802094806464.

The previous prime is 400540525245313. The next prime is 400540525245383. The reversal of 400540525245321 is 123542525045004.

It is a cyclic number.

It is not a de Polignac number, because 400540525245321 - 2³ = 400540525245313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400540525245221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15042006 + ... + 32052191.

It is an arithmetic number, because the mean of its divisors is an integer number (33781515920964).

Almost surely, 2^{400540525245321} is an apocalyptic number.

It is an amenable number.

400540525245321 is a deficient number, since it is larger than the sum of its proper divisors (139963729490103).

400540525245321 is a wasteful number, since it uses less digits than its factorization.

400540525245321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47128440.

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 400540525245321 in words is "four hundred trillion, five hundred forty billion, five hundred twenty-five million, two hundred forty-five thousand, three hundred twenty-one".