40778316444 has 48 divisors (see below), whose sum is σ = 97849686816. Its totient is φ = 13209600000.

The previous prime is 40778316443. The next prime is 40778316487. The reversal of 40778316444 is 44461387704.

It is a junction number, because it is equal to n+sod(n) for n = 40778316393 and 40778316402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40778316443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34807 + ... + 287694.

It is an arithmetic number, because the mean of its divisors is an integer number (2038535142).

Almost surely, 2^40778316444 is an apocalyptic number.

It is an amenable number.

40778316444 is an abundant number, since it is smaller than the sum of its proper divisors (57071370372).

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

40778316444 is a wasteful number, since it uses less digits than its factorization.

40778316444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322806 (or 322804 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 48.

The spelling of 40778316444 in words is "forty billion, seven hundred seventy-eight million, three hundred sixteen thousand, four hundred forty-four".