20021478710 has 16 divisors (see below), whose sum is σ = 36140760576. Its totient is φ = 7985902848.

The previous prime is 20021478649. The next prime is 20021478713. The reversal of 20021478710 is 1787412002.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021478713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2832374 + ... + 2839433.

It is an arithmetic number, because the mean of its divisors is an integer number (2258797536).

Almost surely, 2^20021478710 is an apocalyptic number.

20021478710 is a deficient number, since it is larger than the sum of its proper divisors (16119281866).

20021478710 is a wasteful number, since it uses less digits than its factorization.

20021478710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672167.

The product of its (nonzero) digits is 6272, while the sum is 32.

The spelling of 20021478710 in words is "twenty billion, twenty-one million, four hundred seventy-eight thousand, seven hundred ten".