40661387376 has 40 divisors (see below), whose sum is σ = 105808663824. Its totient is φ = 13454860800.

The previous prime is 40661387279. The next prime is 40661387443. The reversal of 40661387376 is 67378316604.

40661387376 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40661387376² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 3085075 + ... + 3098226.

Almost surely, 2^40661387376 is an apocalyptic number.

It is an amenable number.

40661387376 is an abundant number, since it is smaller than the sum of its proper divisors (65147276448).

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

40661387376 is a wasteful number, since it uses less digits than its factorization.

40661387376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6183449 (or 6183443 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 40661387376 in words is "forty billion, six hundred sixty-one million, three hundred eighty-seven thousand, three hundred seventy-six".