41257378985 has 4 divisors (see below), whose sum is σ = 49508854788. Its totient is φ = 33005903184.

The previous prime is 41257378973. The next prime is 41257379011. The reversal of 41257378985 is 58987375214.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10231727104 + 31025651881 = 101152^2 + 176141^2 .

It is a cyclic number.

It is not a de Polignac number, because 41257378985 - 2⁴ = 41257378969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4125737894 + ... + 4125737903.

It is an arithmetic number, because the mean of its divisors is an integer number (12377213697).

Almost surely, 2^41257378985 is an apocalyptic number.

It is an amenable number.

41257378985 is a deficient number, since it is larger than the sum of its proper divisors (8251475803).

41257378985 is an equidigital number, since it uses as much as digits as its factorization.

41257378985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251475802.

The product of its digits is 16934400, while the sum is 59.

The spelling of 41257378985 in words is "forty-one billion, two hundred fifty-seven million, three hundred seventy-eight thousand, nine hundred eighty-five".