402776047547 has 2 divisors, whose sum is σ = 402776047548. Its totient is φ = 402776047546.

The previous prime is 402776047411. The next prime is 402776047579. The reversal of 402776047547 is 745740677204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402776047547 - 2⁸ = 402776047291 is a prime.

It is not a weakly prime, because it can be changed into another prime (402776077547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201388023773 + 201388023774.

It is an arithmetic number, because the mean of its divisors is an integer number (201388023774).

Almost surely, 2^402776047547 is an apocalyptic number.

402776047547 is a deficient number, since it is larger than the sum of its proper divisors (1).

402776047547 is an equidigital number, since it uses as much as digits as its factorization.

402776047547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9219840, while the sum is 53.

The spelling of 402776047547 in words is "four hundred two billion, seven hundred seventy-six million, forty-seven thousand, five hundred forty-seven".