20648229371 has 16 divisors (see below), whose sum is σ = 25892068608. Its totient is φ = 15996516000.

The previous prime is 20648229367. The next prime is 20648229397. The reversal of 20648229371 is 17392284602.

It is a cyclic number.

It is not a de Polignac number, because 20648229371 - 2² = 20648229367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20648229331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 761705 + ... + 788346.

It is an arithmetic number, because the mean of its divisors is an integer number (1618254288).

Almost surely, 2^20648229371 is an apocalyptic number.

20648229371 is a deficient number, since it is larger than the sum of its proper divisors (5243839237).

20648229371 is a wasteful number, since it uses less digits than its factorization.

20648229371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550242.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 20648229371 in words is "twenty billion, six hundred forty-eight million, two hundred twenty-nine thousand, three hundred seventy-one".