40205155288321 has 16 divisors (see below), whose sum is σ = 42388474963968. Its totient is φ = 38058159744000.

The previous prime is 40205155288313. The next prime is 40205155288327. The reversal of 40205155288321 is 12388255150204.

It is a cyclic number.

It is not a de Polignac number, because 40205155288321 - 2³ = 40205155288313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40205155288327) 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, 34114861 + ... + 35273701.

It is an arithmetic number, because the mean of its divisors is an integer number (2649279685248).

Almost surely, 2^{40205155288321} is an apocalyptic number.

It is an amenable number.

40205155288321 is a deficient number, since it is larger than the sum of its proper divisors (2183319675647).

40205155288321 is a wasteful number, since it uses less digits than its factorization.

40205155288321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174512.

The product of its (nonzero) digits is 768000, while the sum is 46.

The spelling of 40205155288321 in words is "forty trillion, two hundred five billion, one hundred fifty-five million, two hundred eighty-eight thousand, three hundred twenty-one".