40640267770 has 8 divisors (see below), whose sum is σ = 73152482004. Its totient is φ = 16256107104.

The previous prime is 40640267729. The next prime is 40640267771. The reversal of 40640267770 is 7776204604.

It can be written as a sum of positive squares in 2 ways, for example, as 39871703041 + 768564729 = 199679^2 + 27723^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40640267771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032013379 + ... + 2032013398.

Almost surely, 2^40640267770 is an apocalyptic number.

40640267770 is a deficient number, since it is larger than the sum of its proper divisors (32512214234).

40640267770 is a wasteful number, since it uses less digits than its factorization.

40640267770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064026784.

The product of its (nonzero) digits is 395136, while the sum is 43.

The spelling of 40640267770 in words is "forty billion, six hundred forty million, two hundred sixty-seven thousand, seven hundred seventy".