40488601865 has 8 divisors (see below), whose sum is σ = 50261712840. Its totient is φ = 31273954432.

The previous prime is 40488601859. The next prime is 40488601877. The reversal of 40488601865 is 56810688404.

It can be written as a sum of positive squares in 4 ways, for example, as 15323221369 + 25165380496 = 123787^2 + 158636^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40488601865 - 2⁴ = 40488601849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139615724 + ... + 139616013.

It is an arithmetic number, because the mean of its divisors is an integer number (6282714105).

Almost surely, 2^40488601865 is an apocalyptic number.

It is an amenable number.

40488601865 is a deficient number, since it is larger than the sum of its proper divisors (9773110975).

40488601865 is a wasteful number, since it uses less digits than its factorization.

40488601865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279231771.

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 40488601865 in words is "forty billion, four hundred eighty-eight million, six hundred one thousand, eight hundred sixty-five".