40931585075361 has 4 divisors (see below), whose sum is σ = 54575446767152. Its totient is φ = 27287723383572.

The previous prime is 40931585075357. The next prime is 40931585075377. The reversal of 40931585075361 is 16357058513904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40931585075361 - 2² = 40931585075357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40931585075861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6821930845891 + ... + 6821930845896.

It is an arithmetic number, because the mean of its divisors is an integer number (13643861691788).

Almost surely, 2^{40931585075361} is an apocalyptic number.

It is an amenable number.

40931585075361 is a deficient number, since it is larger than the sum of its proper divisors (13643861691791).

40931585075361 is a wasteful number, since it uses less digits than its factorization.

40931585075361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13643861691790.

The product of its (nonzero) digits is 13608000, while the sum is 57.

The spelling of 40931585075361 in words is "forty trillion, nine hundred thirty-one billion, five hundred eighty-five million, seventy-five thousand, three hundred sixty-one".