27790647402 has 16 divisors (see below), whose sum is σ = 63521479872. Its totient is φ = 7940184960.

The previous prime is 27790647397. The next prime is 27790647449. The reversal of 27790647402 is 20474609772.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330840999 + ... + 330841082.

It is an arithmetic number, because the mean of its divisors is an integer number (3970092492).

Almost surely, 2^27790647402 is an apocalyptic number.

27790647402 is an abundant number, since it is smaller than the sum of its proper divisors (35730832470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27790647402 is a wasteful number, since it uses less digits than its factorization.

27790647402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661682093.

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 27790647402 in words is "twenty-seven billion, seven hundred ninety million, six hundred forty-seven thousand, four hundred two".