40906878038890 has 32 divisors (see below), whose sum is σ = 74219611772160. Its totient is φ = 16232689636800.

The previous prime is 40906878038879. The next prime is 40906878038891. The reversal of 40906878038890 is 9883087860904.

It is not an unprimeable number, because it can be changed into a prime (40906878038891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26387746 + ... + 27894925.

It is an arithmetic number, because the mean of its divisors is an integer number (2319362867880).

Almost surely, 2^{40906878038890} is an apocalyptic number.

40906878038890 is a deficient number, since it is larger than the sum of its proper divisors (33312733733270).

40906878038890 is a wasteful number, since it uses less digits than its factorization.

40906878038890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54283278.

The product of its (nonzero) digits is 167215104, while the sum is 70.

The spelling of 40906878038890 in words is "forty trillion, nine hundred six billion, eight hundred seventy-eight million, thirty-eight thousand, eight hundred ninety".