40245740068 has 6 divisors (see below), whose sum is σ = 70430045126. Its totient is φ = 20122870032.

The previous prime is 40245740063. The next prime is 40245740081. The reversal of 40245740068 is 86004754204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31148014144 + 9097725924 = 176488^2 + 95382^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40245740068.

It is not an unprimeable number, because it can be changed into a prime (40245740063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030717505 + ... + 5030717512.

Almost surely, 2^40245740068 is an apocalyptic number.

It is an amenable number.

40245740068 is a deficient number, since it is larger than the sum of its proper divisors (30184305058).

40245740068 is a wasteful number, since it uses less digits than its factorization.

40245740068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10061435021 (or 10061435019 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 40245740068 in words is "forty billion, two hundred forty-five million, seven hundred forty thousand, sixty-eight".