402776047546 has 4 divisors (see below), whose sum is σ = 604164071322. Its totient is φ = 201388023772.

The previous prime is 402776047411. The next prime is 402776047547. The reversal of 402776047546 is 645740677204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 391076380321 + 11699667225 = 625361^2 + 108165^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402776047493 and 402776047502.

It is not an unprimeable number, because it can be changed into a prime (402776047547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100694011885 + ... + 100694011888.

Almost surely, 2^402776047546 is an apocalyptic number.

402776047546 is a deficient number, since it is larger than the sum of its proper divisors (201388023776).

402776047546 is a wasteful number, since it uses less digits than its factorization.

402776047546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201388023775.

The product of its (nonzero) digits is 7902720, while the sum is 52.

The spelling of 402776047546 in words is "four hundred two billion, seven hundred seventy-six million, forty-seven thousand, five hundred forty-six".