40654041251 has 4 divisors (see below), whose sum is σ = 40654454232. Its totient is φ = 40653628272.

The previous prime is 40654041229. The next prime is 40654041289. The reversal of 40654041251 is 15214045604.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40654041251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40654041751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36431 + ... + 287463.

It is an arithmetic number, because the mean of its divisors is an integer number (10163613558).

Almost surely, 2^40654041251 is an apocalyptic number.

40654041251 is a deficient number, since it is larger than the sum of its proper divisors (412981).

40654041251 is a wasteful number, since it uses less digits than its factorization.

40654041251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412980.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 40654041251 its reverse (15214045604), we get a palindrome (55868086855).

The spelling of 40654041251 in words is "forty billion, six hundred fifty-four million, forty-one thousand, two hundred fifty-one".