20642363035 has 24 divisors (see below), whose sum is σ = 30067890336. Its totient is φ = 13539335040.

The previous prime is 20642363023. The next prime is 20642363047. The reversal of 20642363035 is 53036324602.

It is an interprime number because it is at equal distance from previous prime (20642363023) and next prime (20642363047).

It is not a de Polignac number, because 20642363035 - 2¹¹ = 20642360987 is a prime.

It is a super-2 number, since 2×20642363035² (a number of 21 digits) contains 22 as substring.

It is a Duffinian 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 23 ways as a sum of consecutive naturals, for example, 1825986 + ... + 1837255.

It is an arithmetic number, because the mean of its divisors is an integer number (1252828764).

Almost surely, 2^20642363035 is an apocalyptic number.

20642363035 is a deficient number, since it is larger than the sum of its proper divisors (9425527301).

20642363035 is a wasteful number, since it uses less digits than its factorization.

20642363035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663283 (or 3663276 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 34.

Adding to 20642363035 its reverse (53036324602), we get a palindrome (73678687637).

The spelling of 20642363035 in words is "twenty billion, six hundred forty-two million, three hundred sixty-three thousand, thirty-five".