40663350078 has 16 divisors (see below), whose sum is σ = 87582600336. Its totient is φ = 12511800000.

The previous prime is 40663350071. The next prime is 40663350097. The reversal of 40663350078 is 87005336604.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40663350071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260662423 + ... + 260662578.

It is an arithmetic number, because the mean of its divisors is an integer number (5473912521).

Almost surely, 2^40663350078 is an apocalyptic number.

40663350078 is an abundant number, since it is smaller than the sum of its proper divisors (46919250258).

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

40663350078 is a wasteful number, since it uses less digits than its factorization.

40663350078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521325019.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 40663350078 in words is "forty billion, six hundred sixty-three million, three hundred fifty thousand, seventy-eight".