40400278777875 has 32 divisors (see below), whose sum is σ = 67277896665408. Its totient is φ = 21530202278400.

The previous prime is 40400278777853. The next prime is 40400278777891. The reversal of 40400278777875 is 57877787200404.

It is not a de Polignac number, because 40400278777875 - 2¹⁷ = 40400278646803 is a prime.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41045652 + ... + 42018401.

It is an arithmetic number, because the mean of its divisors is an integer number (2102434270794).

Almost surely, 2^{40400278777875} is an apocalyptic number.

40400278777875 is a deficient number, since it is larger than the sum of its proper divisors (26877617887533).

40400278777875 is a wasteful number, since it uses less digits than its factorization.

40400278777875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83065368 (or 83065358 counting only the distinct ones).

The product of its (nonzero) digits is 172103680, while the sum is 66.

The spelling of 40400278777875 in words is "forty trillion, four hundred billion, two hundred seventy-eight million, seven hundred seventy-seven thousand, eight hundred seventy-five".