20366402653 has 16 divisors (see below), whose sum is σ = 21167562240. Its totient is φ = 19580598576.

The previous prime is 20366402647. The next prime is 20366402657. The reversal of 20366402653 is 35620466302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20366402653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20366402657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5872626 + ... + 5876092.

It is an arithmetic number, because the mean of its divisors is an integer number (1322972640).

Almost surely, 2^20366402653 is an apocalyptic number.

It is an amenable number.

20366402653 is a deficient number, since it is larger than the sum of its proper divisors (801159587).

20366402653 is a wasteful number, since it uses less digits than its factorization.

20366402653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616.

The product of its (nonzero) digits is 155520, while the sum is 37.

Adding to 20366402653 its reverse (35620466302), we get a palindrome (55986868955).

The spelling of 20366402653 in words is "twenty billion, three hundred sixty-six million, four hundred two thousand, six hundred fifty-three".