40773777436 has 72 divisors (see below), whose sum is σ = 85352762880. Its totient is φ = 16694041056.

The previous prime is 40773777409. The next prime is 40773777463. The reversal of 40773777436 is 63477737704.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40773777409) and next prime (40773777463).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19535985 + ... + 19538071.

It is an arithmetic number, because the mean of its divisors is an integer number (1185455040).

Almost surely, 2^40773777436 is an apocalyptic number.

40773777436 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40773777436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42676381440).

40773777436 is an abundant number, since it is smaller than the sum of its proper divisors (44578985444).

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

40773777436 is a wasteful number, since it uses less digits than its factorization.

40773777436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463 (or 3438 counting only the distinct ones).

The product of its (nonzero) digits is 14521248, while the sum is 55.

The spelling of 40773777436 in words is "forty billion, seven hundred seventy-three million, seven hundred seventy-seven thousand, four hundred thirty-six".