40810859897 has 4 divisors (see below), whose sum is σ = 40857184116. Its totient is φ = 40764535680.

The previous prime is 40810859891. The next prime is 40810859917. The reversal of 40810859897 is 79895801804.

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 7256313856 + 33554546041 = 85184^2 + 183179^2 .

It is a cyclic number.

It is not a de Polignac number, because 40810859897 - 2⁶ = 40810859833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40810859891) 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, 23160788 + ... + 23162549.

It is an arithmetic number, because the mean of its divisors is an integer number (10214296029).

Almost surely, 2^40810859897 is an apocalyptic number.

It is an amenable number.

40810859897 is a deficient number, since it is larger than the sum of its proper divisors (46324219).

40810859897 is an equidigital number, since it uses as much as digits as its factorization.

40810859897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46324218.

The product of its (nonzero) digits is 5806080, while the sum is 59.

The spelling of 40810859897 in words is "forty billion, eight hundred ten million, eight hundred fifty-nine thousand, eight hundred ninety-seven".