40687388388 has 72 divisors (see below), whose sum is σ = 103235635776. Its totient is φ = 13511534400.

The previous prime is 40687388383. The next prime is 40687388389. The reversal of 40687388388 is 88388378604.

40687388388 is a `hidden beast` number, since 406 + 8 + 73 + 8 + 83 + 88 = 666.

It is not an unprimeable number, because it can be changed into a prime (40687388383) 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, 14896983 + ... + 14899713.

Almost surely, 2^40687388388 is an apocalyptic number.

It is an amenable number.

40687388388 is an abundant number, since it is smaller than the sum of its proper divisors (62548247388).

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

40687388388 is a wasteful number, since it uses less digits than its factorization.

40687388388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145 (or 4140 counting only the distinct ones).

The product of its (nonzero) digits is 49545216, while the sum is 63.

The spelling of 40687388388 in words is "forty billion, six hundred eighty-seven million, three hundred eighty-eight thousand, three hundred eighty-eight".