40203640766 has 4 divisors (see below), whose sum is σ = 60305461152. Its totient is φ = 20101820382.

The previous prime is 40203640739. The next prime is 40203640781. The reversal of 40203640766 is 66704630204.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050910190 + ... + 10050910193.

It is an arithmetic number, because the mean of its divisors is an integer number (15076365288).

Almost surely, 2^40203640766 is an apocalyptic number.

40203640766 is a deficient number, since it is larger than the sum of its proper divisors (20101820386).

40203640766 is a wasteful number, since it uses less digits than its factorization.

40203640766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20101820385.

The product of its (nonzero) digits is 145152, while the sum is 38.

The spelling of 40203640766 in words is "forty billion, two hundred three million, six hundred forty thousand, seven hundred sixty-six".