40773978436 has 24 divisors (see below), whose sum is σ = 72888737600. Its totient is φ = 19951984800.

The previous prime is 40773978373. The next prime is 40773978463. The reversal of 40773978436 is 63487937704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371310 + ... + 468421.

Almost surely, 2^40773978436 is an apocalyptic number.

It is an amenable number.

40773978436 is a deficient number, since it is larger than the sum of its proper divisors (32114759164).

40773978436 is a wasteful number, since it uses less digits than its factorization.

40773978436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839995 (or 839993 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 58.

The spelling of 40773978436 in words is "forty billion, seven hundred seventy-three million, nine hundred seventy-eight thousand, four hundred thirty-six".