20451896396 has 6 divisors (see below), whose sum is σ = 35790818700. Its totient is φ = 10225948196.

The previous prime is 20451896363. The next prime is 20451896411. The reversal of 20451896396 is 69369815402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2556487046 + ... + 2556487053.

It is an arithmetic number, because the mean of its divisors is an integer number (5965136450).

Almost surely, 2^20451896396 is an apocalyptic number.

It is an amenable number.

20451896396 is a deficient number, since it is larger than the sum of its proper divisors (15338922304).

20451896396 is a wasteful number, since it uses less digits than its factorization.

20451896396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112974103 (or 5112974101 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 20451896396 in words is "twenty billion, four hundred fifty-one million, eight hundred ninety-six thousand, three hundred ninety-six".