40778356032 has 168 divisors, whose sum is σ = 123198346440. Its totient is φ = 12876165120.

The previous prime is 40778356013. The next prime is 40778356033. The reversal of 40778356032 is 23065387704.

40778356032 is a `hidden beast` number, since 4 + 0 + 7 + 7 + 8 + 35 + 603 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2603448576 + 38174907456 = 51024^2 + 195384^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40778356033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 862282 + ... + 908342.

Almost surely, 2^40778356032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40778356032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61599173220).

40778356032 is an abundant number, since it is smaller than the sum of its proper divisors (82419990408).

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

40778356032 is a wasteful number, since it uses less digits than its factorization.

40778356032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46161 (or 46148 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 40778356032 in words is "forty billion, seven hundred seventy-eight million, three hundred fifty-six thousand, thirty-two".