20051854516 has 24 divisors (see below), whose sum is σ = 36943232480. Its totient is φ = 9496805472.

The previous prime is 20051854499. The next prime is 20051854517. The reversal of 20051854516 is 61545815002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051854517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616231 + ... + 647953.

Almost surely, 2^20051854516 is an apocalyptic number.

It is an amenable number.

20051854516 is a deficient number, since it is larger than the sum of its proper divisors (16891377964).

20051854516 is a wasteful number, since it uses less digits than its factorization.

20051854516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40063 (or 40061 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 20051854516 in words is "twenty billion, fifty-one million, eight hundred fifty-four thousand, five hundred sixteen".