40641205134154 has 4 divisors (see below), whose sum is σ = 60961807701234. Its totient is φ = 20320602567076.

The previous prime is 40641205134133. The next prime is 40641205134209. The reversal of 40641205134154 is 45143150214604.

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., 40636455856929 + 4749277225 = 6374673^2 + 68915^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160301283537 + ... + 10160301283540.

Almost surely, 2^{40641205134154} is an apocalyptic number.

40641205134154 is a deficient number, since it is larger than the sum of its proper divisors (20320602567080).

40641205134154 is a wasteful number, since it uses less digits than its factorization.

40641205134154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20320602567079.

The product of its (nonzero) digits is 230400, while the sum is 40.

Adding to 40641205134154 its reverse (45143150214604), we get a palindrome (85784355348758).

The spelling of 40641205134154 in words is "forty trillion, six hundred forty-one billion, two hundred five million, one hundred thirty-four thousand, one hundred fifty-four".