20435321654 has 32 divisors (see below), whose sum is σ = 33559142400. Its totient is φ = 9255651840.

The previous prime is 20435321651. The next prime is 20435321663. The reversal of 20435321654 is 45612353402.

It is a super-2 number, since 2×20435321654² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20435321651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9125867 + ... + 9128105.

It is an arithmetic number, because the mean of its divisors is an integer number (1048723200).

Almost surely, 2^20435321654 is an apocalyptic number.

20435321654 is a deficient number, since it is larger than the sum of its proper divisors (13123820746).

20435321654 is a wasteful number, since it uses less digits than its factorization.

20435321654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3548.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 20435321654 in words is "twenty billion, four hundred thirty-five million, three hundred twenty-one thousand, six hundred fifty-four".