27421772780 has 24 divisors (see below), whose sum is σ = 57790666080. Its totient is φ = 10929672320.

The previous prime is 27421772723. The next prime is 27421772831. The reversal of 27421772780 is 8727712472.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2434040 + ... + 2445279.

It is an arithmetic number, because the mean of its divisors is an integer number (2407944420).

Almost surely, 2^27421772780 is an apocalyptic number.

27421772780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27421772780 is an abundant number, since it is smaller than the sum of its proper divisors (30368893300).

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

27421772780 is a wasteful number, since it uses less digits than its factorization.

27421772780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4879609 (or 4879607 counting only the distinct ones).

The product of its (nonzero) digits is 614656, while the sum is 47.

The spelling of 27421772780 in words is "twenty-seven billion, four hundred twenty-one million, seven hundred seventy-two thousand, seven hundred eighty".