20430626546 has 32 divisors (see below), whose sum is σ = 35221677120. Its totient is φ = 8790336000.

The previous prime is 20430626543. The next prime is 20430626549. The reversal of 20430626546 is 64562603402.

It is an interprime number because it is at equal distance from previous prime (20430626543) and next prime (20430626549).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (20430626543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481670 + ... + 522366.

It is an arithmetic number, because the mean of its divisors is an integer number (1100677410).

Almost surely, 2^20430626546 is an apocalyptic number.

20430626546 is a deficient number, since it is larger than the sum of its proper divisors (14791050574).

20430626546 is a wasteful number, since it uses less digits than its factorization.

20430626546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41930.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 20430626546 in words is "twenty billion, four hundred thirty million, six hundred twenty-six thousand, five hundred forty-six".