40637778116640 has 96 divisors (see below), whose sum is σ = 128047574632320. Its totient is φ = 10833475344384.

The previous prime is 40637778116623. The next prime is 40637778116651. The reversal of 40637778116640 is 4661187773604.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11161029 + ... + 14347268.

It is an arithmetic number, because the mean of its divisors is an integer number (1333828902420).

Almost surely, 2^{40637778116640} is an apocalyptic number.

40637778116640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40637778116640 is an abundant number, since it is smaller than the sum of its proper divisors (87409796515680).

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

40637778116640 is a wasteful number, since it uses less digits than its factorization.

40637778116640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25511634 (or 25511626 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 60.

The spelling of 40637778116640 in words is "forty trillion, six hundred thirty-seven billion, seven hundred seventy-eight million, one hundred sixteen thousand, six hundred forty".