20753796428 has 12 divisors (see below), whose sum is σ = 36477744240. Its totient is φ = 10331583792.

The previous prime is 20753796421. The next prime is 20753796451. The reversal of 20753796428 is 82469735702.

It is a self number, because there is not a number n which added to its sum of digits gives 20753796428.

It is not an unprimeable number, because it can be changed into a prime (20753796421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11327576 + ... + 11329407.

It is an arithmetic number, because the mean of its divisors is an integer number (3039812020).

Almost surely, 2^20753796428 is an apocalyptic number.

It is an amenable number.

20753796428 is a deficient number, since it is larger than the sum of its proper divisors (15723947812).

20753796428 is a wasteful number, since it uses less digits than its factorization.

20753796428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22657216 (or 22657214 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 20753796428 in words is "twenty billion, seven hundred fifty-three million, seven hundred ninety-six thousand, four hundred twenty-eight".