20516521262 has 4 divisors (see below), whose sum is σ = 30774781896. Its totient is φ = 10258260630.

The previous prime is 20516521253. The next prime is 20516521273. The reversal of 20516521262 is 26212561502.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5129130314 + ... + 5129130317.

It is an arithmetic number, because the mean of its divisors is an integer number (7693695474).

Almost surely, 2^20516521262 is an apocalyptic number.

20516521262 is a deficient number, since it is larger than the sum of its proper divisors (10258260634).

20516521262 is a wasteful number, since it uses less digits than its factorization.

20516521262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10258260633.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 20516521262 in words is "twenty billion, five hundred sixteen million, five hundred twenty-one thousand, two hundred sixty-two".