40551012251 has 2 divisors, whose sum is σ = 40551012252. Its totient is φ = 40551012250.

The previous prime is 40551012221. The next prime is 40551012253. The reversal of 40551012251 is 15221015504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40551012251 - 2³⁴ = 23371143067 is a prime.

Together with 40551012253, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40551012251.

It is not a weakly prime, because it can be changed into another prime (40551012253) 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 as a sum of consecutive naturals, namely, 20275506125 + 20275506126.

It is an arithmetic number, because the mean of its divisors is an integer number (20275506126).

Almost surely, 2^40551012251 is an apocalyptic number.

40551012251 is a deficient number, since it is larger than the sum of its proper divisors (1).

40551012251 is an equidigital number, since it uses as much as digits as its factorization.

40551012251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 40551012251 its reverse (15221015504), we get a palindrome (55772027755).

The spelling of 40551012251 in words is "forty billion, five hundred fifty-one million, twelve thousand, two hundred fifty-one".