21770422680 has 96 divisors (see below), whose sum is σ = 68929758000. Its totient is φ = 5499885312.

The previous prime is 21770422643. The next prime is 21770422693. The reversal of 21770422680 is 8622407712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207955 + ... + 294594.

Almost surely, 2^21770422680 is an apocalyptic number.

21770422680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21770422680 is an abundant number, since it is smaller than the sum of its proper divisors (47159335320).

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

21770422680 is a wasteful number, since it uses less digits than its factorization.

21770422680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502601 (or 502578 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The spelling of 21770422680 in words is "twenty-one billion, seven hundred seventy million, four hundred twenty-two thousand, six hundred eighty".