20401345364 has 24 divisors (see below), whose sum is σ = 36457605408. Its totient is φ = 9986755680.

The previous prime is 20401345351. The next prime is 20401345409. The reversal of 20401345364 is 46354310402.

It is a super-2 number, since 2×20401345364² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20401345364.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 189827 + ... + 277194.

It is an arithmetic number, because the mean of its divisors is an integer number (1519066892).

Almost surely, 2^20401345364 is an apocalyptic number.

It is an amenable number.

20401345364 is a deficient number, since it is larger than the sum of its proper divisors (16056260044).

20401345364 is a wasteful number, since it uses less digits than its factorization.

20401345364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467255 (or 467253 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 20401345364 its reverse (46354310402), we get a palindrome (66755655766).

The spelling of 20401345364 in words is "twenty billion, four hundred one million, three hundred forty-five thousand, three hundred sixty-four".