40835786478 has 8 divisors (see below), whose sum is σ = 81671572968. Its totient is φ = 13611928824.

The previous prime is 40835786477. The next prime is 40835786521. The reversal of 40835786478 is 87468753804.

It is a happy number.

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

40835786478 is an admirable number.

It is a super-2 number, since 2×40835786478² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40835786473) 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, 3402982201 + ... + 3402982212.

It is an arithmetic number, because the mean of its divisors is an integer number (10208946621).

Almost surely, 2^40835786478 is an apocalyptic number.

40835786478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40835786478 is a wasteful number, since it uses less digits than its factorization.

40835786478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6805964418.

The product of its (nonzero) digits is 36126720, while the sum is 60.

The spelling of 40835786478 in words is "forty billion, eight hundred thirty-five million, seven hundred eighty-six thousand, four hundred seventy-eight".