40578218385 has 32 divisors (see below), whose sum is σ = 66733994880. Its totient is φ = 21039717888.

The previous prime is 40578218381. The next prime is 40578218399. The reversal of 40578218385 is 58381287504.

40578218385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40578218385 - 2² = 40578218381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40578218381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 669709 + ... + 727781.

It is an arithmetic number, because the mean of its divisors is an integer number (2085437340).

Almost surely, 2^40578218385 is an apocalyptic number.

It is an amenable number.

40578218385 is a deficient number, since it is larger than the sum of its proper divisors (26155776495).

40578218385 is a wasteful number, since it uses less digits than its factorization.

40578218385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59377.

The product of its (nonzero) digits is 2150400, while the sum is 51.

The spelling of 40578218385 in words is "forty billion, five hundred seventy-eight million, two hundred eighteen thousand, three hundred eighty-five".