20551310276 has 24 divisors (see below), whose sum is σ = 41117823936. Its totient is φ = 8804446560.

The previous prime is 20551310257. The next prime is 20551310281. The reversal of 20551310276 is 67201315502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57911 + ... + 210846.

It is an arithmetic number, because the mean of its divisors is an integer number (1713242664).

Almost surely, 2^20551310276 is an apocalyptic number.

It is an amenable number.

20551310276 is an abundant number, since it is smaller than the sum of its proper divisors (20566513660).

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

20551310276 is a wasteful number, since it uses less digits than its factorization.

20551310276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271499 (or 271497 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

Adding to 20551310276 its reverse (67201315502), we get a palindrome (87752625778).

The spelling of 20551310276 in words is "twenty billion, five hundred fifty-one million, three hundred ten thousand, two hundred seventy-six".