40540405487 has 2 divisors, whose sum is σ = 40540405488. Its totient is φ = 40540405486.

The previous prime is 40540405391. The next prime is 40540405519. The reversal of 40540405487 is 78450404504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40540405487 - 2¹⁶ = 40540339951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40540405187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20270202743 + 20270202744.

It is an arithmetic number, because the mean of its divisors is an integer number (20270202744).

Almost surely, 2^40540405487 is an apocalyptic number.

40540405487 is a deficient number, since it is larger than the sum of its proper divisors (1).

40540405487 is an equidigital number, since it uses as much as digits as its factorization.

40540405487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 358400, while the sum is 41.

The spelling of 40540405487 in words is "forty billion, five hundred forty million, four hundred five thousand, four hundred eighty-seven".