27790521456 has 40 divisors (see below), whose sum is σ = 75570718720. Its totient is φ = 8775953856.

The previous prime is 27790521431. The next prime is 27790521463. The reversal of 27790521456 is 65412509772.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 15235120 + ... + 15236943.

It is an arithmetic number, because the mean of its divisors is an integer number (1889267968).

Almost surely, 2^27790521456 is an apocalyptic number.

It is an amenable number.

27790521456 is an abundant number, since it is smaller than the sum of its proper divisors (47780197264).

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

27790521456 is a wasteful number, since it uses less digits than its factorization.

27790521456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30472093 (or 30472087 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 27790521456 in words is "twenty-seven billion, seven hundred ninety million, five hundred twenty-one thousand, four hundred fifty-six".