20265517996 has 12 divisors (see below), whose sum is σ = 35470627920. Its totient is φ = 10131052880.

The previous prime is 20265517991. The next prime is 20265518029. The reversal of 20265517996 is 69971556202.

It is not an unprimeable number, because it can be changed into a prime (20265517991) 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, 399616 + ... + 447463.

It is an arithmetic number, because the mean of its divisors is an integer number (2955885660).

Almost surely, 2^20265517996 is an apocalyptic number.

It is an amenable number.

20265517996 is a deficient number, since it is larger than the sum of its proper divisors (15205109924).

20265517996 is a wasteful number, since it uses less digits than its factorization.

20265517996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853064 (or 853062 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 20265517996 in words is "twenty billion, two hundred sixty-five million, five hundred seventeen thousand, nine hundred ninety-six".