4000407440078 has 64 divisors (see below), whose sum is σ = 6898044561408. Its totient is φ = 1704451921920.

The previous prime is 4000407440077. The next prime is 4000407440123. The reversal of 4000407440078 is 8700447040004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000407440077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2939314118 + ... + 2939315478.

It is an arithmetic number, because the mean of its divisors is an integer number (107781946272).

Almost surely, 2^{4000407440078} is an apocalyptic number.

4000407440078 is a deficient number, since it is larger than the sum of its proper divisors (2897637121330).

4000407440078 is a wasteful number, since it uses less digits than its factorization.

4000407440078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177.

The product of its (nonzero) digits is 100352, while the sum is 38.

The spelling of 4000407440078 in words is "four trillion, four hundred seven million, four hundred forty thousand, seventy-eight".