7280040400687 has 2 divisors, whose sum is σ = 7280040400688. Its totient is φ = 7280040400686.

The previous prime is 7280040400673. The next prime is 7280040400741. The reversal of 7280040400687 is 7860040400827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7280040400687 - 2²³ = 7280032012079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7280040400187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3640020200343 + 3640020200344.

It is an arithmetic number, because the mean of its divisors is an integer number (3640020200344).

Almost surely, 2^{7280040400687} is an apocalyptic number.

7280040400687 is a deficient number, since it is larger than the sum of its proper divisors (1).

7280040400687 is an equidigital number, since it uses as much as digits as its factorization.

7280040400687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 602112, while the sum is 46.

The spelling of 7280040400687 in words is "seven trillion, two hundred eighty billion, forty million, four hundred thousand, six hundred eighty-seven".