20645013095 has 32 divisors (see below), whose sum is σ = 31282080768. Its totient is φ = 12744534528.

The previous prime is 20645013089. The next prime is 20645013101. The reversal of 20645013095 is 59031054602.

It is an interprime number because it is at equal distance from previous prime (20645013089) and next prime (20645013101).

It is a cyclic number.

It is not a de Polignac number, because 20645013095 - 2⁴ = 20645013079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 740609 + ... + 767978.

It is an arithmetic number, because the mean of its divisors is an integer number (977565024).

Almost surely, 2^20645013095 is an apocalyptic number.

20645013095 is a deficient number, since it is larger than the sum of its proper divisors (10637067673).

20645013095 is a wasteful number, since it uses less digits than its factorization.

20645013095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508639.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 20645013095 its reverse (59031054602), we get a palindrome (79676067697).

The spelling of 20645013095 in words is "twenty billion, six hundred forty-five million, thirteen thousand, ninety-five".