40056198551 has 2 divisors, whose sum is σ = 40056198552. Its totient is φ = 40056198550.

The previous prime is 40056198517. The next prime is 40056198587. The reversal of 40056198551 is 15589165004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40056198551 - 2¹⁰ = 40056197527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40056198851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20028099275 + 20028099276.

It is an arithmetic number, because the mean of its divisors is an integer number (20028099276).

Almost surely, 2^40056198551 is an apocalyptic number.

40056198551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40056198551 is an equidigital number, since it uses as much as digits as its factorization.

40056198551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 44.

The spelling of 40056198551 in words is "forty billion, fifty-six million, one hundred ninety-eight thousand, five hundred fifty-one".