20465112542 has 24 divisors (see below), whose sum is σ = 35836661520. Its totient is φ = 8739538080.

The previous prime is 20465112527. The next prime is 20465112557. The reversal of 20465112542 is 24521156402.

It is an interprime number because it is at equal distance from previous prime (20465112527) and next prime (20465112557).

It is a junction number, because it is equal to n+sod(n) for n = 20465112499 and 20465112508.

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 11 ways as a sum of consecutive naturals, for example, 344042 + ... + 399117.

It is an arithmetic number, because the mean of its divisors is an integer number (1493194230).

Almost surely, 2^20465112542 is an apocalyptic number.

20465112542 is a deficient number, since it is larger than the sum of its proper divisors (15371548978).

20465112542 is a wasteful number, since it uses less digits than its factorization.

20465112542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743456 (or 743449 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 20465112542 its reverse (24521156402), we get a palindrome (44986268944).

The spelling of 20465112542 in words is "twenty billion, four hundred sixty-five million, one hundred twelve thousand, five hundred forty-two".