40002860978 has 16 divisors (see below), whose sum is σ = 60177977304. Its totient is φ = 19943573760.

The previous prime is 40002860977. The next prime is 40002860983. The reversal of 40002860978 is 87906820004.

40002860978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37111325449 + 2891535529 = 192643^2 + 53773^2 .

It is not an unprimeable number, because it can be changed into a prime (40002860977) 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, 2546468 + ... + 2562128.

Almost surely, 2^40002860978 is an apocalyptic number.

40002860978 is a deficient number, since it is larger than the sum of its proper divisors (20175116326).

40002860978 is a wasteful number, since it uses less digits than its factorization.

40002860978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19277.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 40002860978 in words is "forty billion, two million, eight hundred sixty thousand, nine hundred seventy-eight".