40405861082 has 4 divisors (see below), whose sum is σ = 60608791626. Its totient is φ = 20202930540.

The previous prime is 40405861081. The next prime is 40405861091. The reversal of 40405861082 is 28016850404.

It is a happy number.

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., 20990504161 + 19415356921 = 144881^2 + 139339^2 .

It is not an unprimeable number, because it can be changed into a prime (40405861081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101465269 + ... + 10101465272.

Almost surely, 2^40405861082 is an apocalyptic number.

40405861082 is a deficient number, since it is larger than the sum of its proper divisors (20202930544).

40405861082 is a wasteful number, since it uses less digits than its factorization.

40405861082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20202930543.

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 40405861082 in words is "forty billion, four hundred five million, eight hundred sixty-one thousand, eighty-two".