40664432512154 has 16 divisors (see below), whose sum is σ = 66542561169120. Its totient is φ = 18483621150960.

The previous prime is 40664432512153. The next prime is 40664432512213. The reversal of 40664432512154 is 45121523446604.

It is a junction number, because it is equal to n+sod(n) for n = 40664432512099 and 40664432512108.

It is not an unprimeable number, because it can be changed into a prime (40664432512153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8618804 + ... + 12474479.

It is an arithmetic number, because the mean of its divisors is an integer number (4158910073070).

Almost surely, 2^{40664432512154} is an apocalyptic number.

40664432512154 is a deficient number, since it is larger than the sum of its proper divisors (25878128656966).

40664432512154 is a wasteful number, since it uses less digits than its factorization.

40664432512154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21180925.

The product of its (nonzero) digits is 2764800, while the sum is 47.

Adding to 40664432512154 its reverse (45121523446604), we get a palindrome (85785955958758).

The spelling of 40664432512154 in words is "forty trillion, six hundred sixty-four billion, four hundred thirty-two million, five hundred twelve thousand, one hundred fifty-four".