40663433043251 has 16 divisors (see below), whose sum is σ = 44838995364000. Its totient is φ = 36703762195968.

The previous prime is 40663433043239. The next prime is 40663433043281. The reversal of 40663433043251 is 15234033436604.

It is a cyclic number.

It is not a de Polignac number, because 40663433043251 - 2⁶ = 40663433043187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40663433043281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276710465 + ... + 276857378.

It is an arithmetic number, because the mean of its divisors is an integer number (2802437210250).

Almost surely, 2^{40663433043251} is an apocalyptic number.

40663433043251 is a deficient number, since it is larger than the sum of its proper divisors (4175562320749).

40663433043251 is a wasteful number, since it uses less digits than its factorization.

40663433043251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553568038.

The product of its (nonzero) digits is 1866240, while the sum is 44.

Adding to 40663433043251 its reverse (15234033436604), we get a palindrome (55897466479855).

The spelling of 40663433043251 in words is "forty trillion, six hundred sixty-three billion, four hundred thirty-three million, forty-three thousand, two hundred fifty-one".