41207585781 has 4 divisors (see below), whose sum is σ = 54943447712. Its totient is φ = 27471723852.

The previous prime is 41207585779. The next prime is 41207585801. The reversal of 41207585781 is 18758570214.

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 41207585781 - 2¹ = 41207585779 is a prime.

It is a super-2 number, since 2×41207585781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 41207585781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41207585981) 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, 6867930961 + ... + 6867930966.

It is an arithmetic number, because the mean of its divisors is an integer number (13735861928).

Almost surely, 2^41207585781 is an apocalyptic number.

It is an amenable number.

41207585781 is a deficient number, since it is larger than the sum of its proper divisors (13735861931).

41207585781 is a wasteful number, since it uses less digits than its factorization.

41207585781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13735861930.

The product of its (nonzero) digits is 627200, while the sum is 48.

The spelling of 41207585781 in words is "forty-one billion, two hundred seven million, five hundred eighty-five thousand, seven hundred eighty-one".