40987423423 has 2 divisors, whose sum is σ = 40987423424. Its totient is φ = 40987423422.

The previous prime is 40987423397. The next prime is 40987423483. The reversal of 40987423423 is 32432478904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40987423423 - 2²¹ = 40985326271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40987423483) 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, 20493711711 + 20493711712.

It is an arithmetic number, because the mean of its divisors is an integer number (20493711712).

Almost surely, 2^40987423423 is an apocalyptic number.

40987423423 is a deficient number, since it is larger than the sum of its proper divisors (1).

40987423423 is an equidigital number, since it uses as much as digits as its factorization.

40987423423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 40987423423 in words is "forty billion, nine hundred eighty-seven million, four hundred twenty-three thousand, four hundred twenty-three".