40873261978 has 4 divisors (see below), whose sum is σ = 61309892970. Its totient is φ = 20436630988.

The previous prime is 40873261963. The next prime is 40873261991. The reversal of 40873261978 is 87916237804.

40873261978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 31993403689 + 8879858289 = 178867^2 + 94233^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10218315493 + ... + 10218315496.

Almost surely, 2^40873261978 is an apocalyptic number.

40873261978 is a deficient number, since it is larger than the sum of its proper divisors (20436630992).

40873261978 is a wasteful number, since it uses less digits than its factorization.

40873261978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20436630991.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 40873261978 in words is "forty billion, eight hundred seventy-three million, two hundred sixty-one thousand, nine hundred seventy-eight".