20268028606896 has 120 divisors (see below), whose sum is σ = 66916665979904. Its totient is φ = 5604063200640.

The previous prime is 20268028606879. The next prime is 20268028606897. The reversal of 20268028606896 is 69860682086202.

20268028606896 is a `hidden beast` number, since 2 + 0 + 268 + 0 + 286 + 0 + 6 + 8 + 96 = 666.

It is a super-2 number, since 2×20268028606896² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (20268028606897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324277966 + ... + 324340461.

Almost surely, 2^{20268028606896} is an apocalyptic number.

It is an amenable number.

20268028606896 is an abundant number, since it is smaller than the sum of its proper divisors (46648637373008).

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

20268028606896 is a wasteful number, since it uses less digits than its factorization.

20268028606896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648618479 (or 648618470 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 63.

The spelling of 20268028606896 in words is "twenty trillion, two hundred sixty-eight billion, twenty-eight million, six hundred six thousand, eight hundred ninety-six".