40647236940 has 576 divisors, whose sum is σ = 142875532800. Its totient is φ = 9656672256.

The previous prime is 40647236939. The next prime is 40647236957. The reversal of 40647236940 is 4963274604.

It is a happy number.

40647236940 is a `hidden beast` number, since 406 + 4 + 7 + 236 + 9 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 191 ways as a sum of consecutive naturals, for example, 115147804 + ... + 115148156.

It is an arithmetic number, because the mean of its divisors is an integer number (248047800).

Almost surely, 2^40647236940 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 40647236940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71437766400).

40647236940 is an abundant number, since it is smaller than the sum of its proper divisors (102228295860).

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

40647236940 is a wasteful number, since it uses less digits than its factorization.

40647236940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 40647236940 in words is "forty billion, six hundred forty-seven million, two hundred thirty-six thousand, nine hundred forty".