20799736528 has 10 divisors (see below), whose sum is σ = 40299489554. Its totient is φ = 10399868256.

The previous prime is 20799736501. The next prime is 20799736537. The reversal of 20799736528 is 82563799702.

It can be written as a sum of positive squares in only one way, i.e., 15136873024 + 5662863504 = 123032^2 + 75252^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649991751 + ... + 649991782.

Almost surely, 2^20799736528 is an apocalyptic number.

It is an amenable number.

20799736528 is a deficient number, since it is larger than the sum of its proper divisors (19499753026).

20799736528 is a wasteful number, since it uses less digits than its factorization.

20799736528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299983541 (or 1299983535 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 20799736528 in words is "twenty billion, seven hundred ninety-nine million, seven hundred thirty-six thousand, five hundred twenty-eight".