20356672460 has 12 divisors (see below), whose sum is σ = 42749012208. Its totient is φ = 8142668976.

The previous prime is 20356672439. The next prime is 20356672463. The reversal of 20356672460 is 6427665302.

It is a super-2 number, since 2×20356672460² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20356672463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508916792 + ... + 508916831.

It is an arithmetic number, because the mean of its divisors is an integer number (3562417684).

Almost surely, 2^20356672460 is an apocalyptic number.

20356672460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20356672460 is an abundant number, since it is smaller than the sum of its proper divisors (22392339748).

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

20356672460 is a wasteful number, since it uses less digits than its factorization.

20356672460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017833632 (or 1017833630 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 20356672460 in words is "twenty billion, three hundred fifty-six million, six hundred seventy-two thousand, four hundred sixty".